Facts about the animal kingdom

Birds are some of the most fascinating organisms in the animal kingdom. Although they are not the only animal to fly, their ability to do so allows for unique migratory behaviors and other impressive abilities. They also have a diversity and beauty in their appearance which has inspired naturalists since...

The biodiversity of animal species on our planet is great, as evidenced by the many different types of birds we can see. Their differences can be seen in their plumage, diet, vocal sounds and many other physical characteristics and behavioral traits. Size is also an important differentiator, as is the...

Echinoderms are a diverse group of marine animals belonging to the phylum Echinodermata. They are characterized by their radial symmetry, that is, their bodies are arranged in a symmetrical pattern about a central axis. Echinoderms are found in all oceans of the world, from shallow coastal waters to the...

Sheep are one of the first animals to be domesticated by humans. This is thanks to their usefulness in providing milk, meat, and textiles to various ancient civilizations, as well as their relatively docile nature. Sheep are also known as ovine animals belonging to the genus Ovis. The sheep with which...

Penguins are widely known for their distinctive black and white plumage, upright posture, and waddling gait. In addition to their unique appearance, however, penguins also exhibit a variety of interesting behaviors. Penguins are very social and live in large colonies, sometimes numbering in the millions. They...

There are many reasons one might think to ask is a crocodile a lizard? They have a scaly body with four legs, a long tail, and a prehistoric face. They are both reptiles and have various similarities physically, taxonomically, and otherwise. They both look like contemporary dinosaurs, creatures whose...

The idea of a cat-dog hybrid is a concept that has been around for a long time. People have long been fascinated by the idea of mixing traits of different animals. This has led to the development of certain hybrid animals, such as the liger (lion and tiger), the zonkey (zebra and donkey), and the wolfhound...

The animal kingdom is characterized by a great diversity, in which each species has evolved different characteristics and strategies to ensure its biological success. Reptiles are a diverse group, so it's not surprising that they have developed different reproductive methods. The following AnimalWised...

Dogs have lived with humans for thousands of years. Some studies show that dogs are descended from wolves and apparently were domesticated about 40,000 to 27,000 years ago. But despite this long coexistence between humans and dogs, knowledge about dog reproduction still raises questions. Female dogs can...

Ants belong to the class of insects and are grouped in the family Formicidae. It is a very diverse group, as there are more than 10,000 species, although it is estimated that this number could be much higher. The ants are distributed worldwide, except for some islands and Antarctica. One of their most outstanding...

The word "fish" refers to numerous species. So it should not be surprising that there is more than one way to reproduce and be born. Most fish are oviparous, that is, they reproduce through eggs that are hatched after being laid by the parents, as in birds. However, there are also ovoviviparous or viviparous...

Respiration is a vital function for all living things, from protozoa to higher animals and, of course, humans. Animals have different respiratory systems, depending on the species and the mechanisms that have developed over centuries of evolution. These systems vary in complexity depending on the species,...

When two dogs become stuck together during mating, it can be a strange sight for humans. Their form of copulation can even look painful to the initiated. This is especially because the male and female will turn away from each other and even make movements to separate. Since they are stuck, it can make...

Turtles are one of the most fascinating vertebrates in the animal kingdom. They are particularly well known for their hard shell which provides protection from both predators and the elements. Since not many animals have a carapace like turtles, it can be difficult to think of them as anything but unique....

Our cats are very protective of their paws and for good reason. They are sensitive appendages which allow the cat to carry out their basic functions, including the ability to walk, interact with their environment and even show emotion. Since they are such adventurous felines, domestic cats are at risk of various...

Lagomorphs are a group of mammals distributed throughout the world known for their large ears and amazing speed. Although they resemble rodents in some details, they also differ in many ways. Lagomorphs belong to a different family with their own characteristics. Their evolutionary history is not yet fully...

Flamingos are very beautiful birds, generally distinguished by the pink coloration of their plumage, their long legs and their peculiarly curved neck, which they can move in different directions. Depending on the species, they are found in Africa, America, Asia, or Europe. It is believed that the ancestors...

Spiders are a very extensive and diverse group of arthropods belonging to the class Arachnidae. There are more than 45,000 known species of spiders that occur in habitats around the world. Although all spiders are more or less venomous, only a few of them are dangerous to humans. They are known to be...

Spiders are a very extensive and diverse group of arthropods belonging to the class of arachnids. Spiders are related to scorpions, ticks, and mites, and only very distantly to insects, with which they should not be confused. They have four pairs of segmented legs and can regenerate a leg if they lose...

The flamingo (Phoenicopterus) is one of the most beautiful and spectacular exotic birds in existence. Among its main features are the pink color of its plumage, its long legs, and slender neck. They get their distinctive pink coloration from metabolizing carotenoids in small crustaceans that they eat. The...

When you think of sharks, you probably imagine a mouth full of razor-sharp teeth. Thanks to the many scary shark horror movies in pop culture, most people are terrified of these creatures. But shark teeth are much more interesting than that. In fact, their teeth play an essential role in their hunting...

Insects are the most diverse class of arthropods on our planet, exhibiting a wide variety of characteristics and adaptations. Depending on the species, they can walk, fly or swim and have conquered an infinite number of habitats. Insects differ from one another in their anatomical, biological, and ecological...

The sense of smell in cats is one of the most developed senses in this species, along with hearing and sight. A cat's sense of smell is the primary means by which it can identify people and objects. In fact, their sense of smell is 14 times better than that of humans. It is rare for cats to lose their...

Spiders are arthropod animals that belong to the order Araneae. Within this order is a great diversity of species, being the most varied group identified as arachnids. There are many people who believe spiders are insects, but they are a different type of arthropod. Spiders have eight legs and no antennae...

When discussing eagles, the first animal that may spring to mind is the bald eagle (Haliaeetus leucocephalus). While it is certainly one of the most visible, there are many more different species to be found. Eagles are birds from the family Accipitridae. Many other birds of prey such as ospreys and...

The term birds of prey refers to all birds that actively hunt and feed on other vertebrates. They are characterized by certain physical features such as hook-tipped beaks and sharp, curved talons, as well as a keen eye for spotting prey. There are many species of birds in this group, but eagles are one of...

Axolotls are animals whose name literally means strange water monster in Nahuatl, an Uto-Aztecan language spoken in Mexico. There is no doubt that this animal is strange in more ways than one, and not just because of its almost mythical appearance. Axolotls are unusual among amphibians in that they reach...

Seahorses are tiny fish that get their name from the shape of their head, which resembles the head of a small horse. Although they look like something out of a fairy tale, seahorses are found in oceans all over the world. Seahorses are unique not only because of their shape, anatomy, colors, and facial...

Birds have many characteristics in common, including feathers, beaks, lightweight bones and other features. Despite these similarities, the physical and behavioral characteristics of these animals are incredibly diverse. With around 10,000 extant bird species, we need to find ways to group them together...

Ecosystems exhibit complex dynamics. They are made up of different components that constantly interact with each other. It is a process in which all living things participate, some as predators, others as prey. Snakes are undoubtedly dangerous species known for their hunting abilities, but snakes are also...

A cat's meow is an odd affectation. We say affectation as it is something which adult cats do not generally do to each other, yet domestic cats regularly do to us. The main theory is that meowing in adult cats is related to when they were kittens. Kittens will meow to get attention, just as babies or children...

Dolphins belong to the toothed whales, so they are mammals and have pulmonary respiration. Within this group, there are a number of different species, but they all share these characteristics. One of the best-known species is the common dolphin (Delphinus capensis), which belongs perhaps to the most representative...

We associate the Mediterranean Sea with some of the most beautiful, accessible, and safe beaches in the world. We don't always associate it with sharks. While it is true many shark species live in tropical regions and coral reefs, they can also live in environments as far-reaching as the Arctic. With...

Whales belong to a group of marine mammals known as Cetacea. As mammals, whales also have lungs, just like us, and breathe air, just like us. Most people believe that whales are a type of fish because they are perfectly adapted to life underwater. However, this is not true at all. Whales are warm-blooded,...

The animal kingdom is one of life's greatest success stories, a collection of millions of species that swim, burrow, run, and fly all over the planet. All this diversity, from bees to dolphins, evolved from a common ancestor that probably lived more than 650 million years ago. Recent studies suggest that...

Leopards are mammals that belong to the family Felidae and the species Panthera pardus. Eight subspecies of leopard have been identified and are distributed over a large geographic area. Once common throughout most of sub-Saharan Africa, the leopard inhabited parts of northern and northeastern Africa...

Is there anyone who has not imagined being attacked by a shark on the beach? This widespread thought may have its origin in the ferocious appearance of these animals and in the numerous movies in which they star. Although they are among the deadliest predators in the marine world, there are very few attacks...

As their name implies, whale sharks are a type of large fish. In fact, they are the largest extant fish species currently known to us. Being carnivorous animals with a heft larger than a great white shark, it is understandable some of us will be worried this animal is a maneater. They live in tropical...

Ants are common insects, but they have some unique characteristics. More than 10,000 ant species are known worldwide. They are especially prevalent in tropical forests, where in some places they can account for up to half of the insect population. Ants are hypersocial insects that usually live in organized...

Sharks are among the most efficient hunters on the planet. It is no coincidence that they have successfully roamed the oceans for millions of years. They owe this in part to an impressive combination of sensory systems, including well-developed eyes and a large area of the brain dedicated to vision. However,...

Crocodiles or Crocodylia (order Crocodylia) are the largest reptiles living today. They include alligators, gharials, and true crocodiles. They are all semi-terrestrial animals and have a characteristic body morphology. Crocodiles are also aggressive predators that attack from ambush, waiting until their...

Annelids are a very diverse group of invertebrates which some people think of simply as worms. While all annelids are types of segmented worm, not all worms are annelids. There are more than 1,300 annelid species that we have discovered so far. Within this very large group we can find terrestrial, marine...

The Earth is full of life. Living things populate every corner of our planet, from the most populated areas of major cities to the most remote and unknown corners. This enormous diversity explains why we can find all kinds of animals with surprising behaviors and characteristics on Earth. That's why,...

Being the most diverse class of animals on the planet, insects have incredible differences in appearance when we compare one species with another. These variations apply to almost every physical aspect such as coloring, appendages, and size. While we correctly think of insects as being small in size, this...

Starfish belong to the phylum Echinodermata and the class Asteroidea. Echinoderms are all marine-based organisms and there are about 7,000 known species with around 1,900 being different species of starfish, also known as sea stars. No species of echinoderms are known to live in fresh water, as they need...

We mostly associate flying animals with birds and we do so for good reason. The list of flightless birds is small compared to those that can fly. The opposite is true when we look at mammal species. Although there is great morphological variety in mammals, we think of them as being mostly terrestrial...

The interactions between plants and animals are very complex. Any disruptions to these relationships can be very disruptive to a given ecosystem. While the relationship between fruit-eating animals and the fruit they eat can seem straightforward, it is usually part of a very complex reciprocal relationship....

The opossum is an animal that lives exclusively in the Americas. The opossum belongs to a very diverse group, so there are several species, some of which are more widespread than others. They are the largest order of marsupials in the Western Hemisphere and include over 120 species in 19 genera. Opossums...

The owl is the common name for birds of the family Strigidae of the order Strigiformes, nocturnal birds of prey. Have you ever wondered how these creatures sleep? The sleeping habits of owls vary greatly depending on the species. We know that most owls are nocturnal and usually sleep standing up and...

The animals we know as owls belong to the order Strigiformes, which is subdivided into two families. The first is the Strigidae, commonly referred to as true owls. The second is Tytonidae, which includes the birds known as barn owls. Colloquially, when referring to owls, we can use the same term for both families....