DOG

Dogs perform many roles for people, such as hunting, herding, pulling loads,
protection, assisting police and military, companionship and, more recently,
aiding handicapped individuals. This influence on human society has given
them the sobriquet, "man's best friend".

CAT

Cats are similar in anatomy to the other felids, with a strong, flexible body,
quick reflexes, sharp retractable claws, and teeth adapted to killing small prey.
Cat senses fit a crepuscular and predatory ecological niche. Cats can hear
sounds too faint or too high in frequency for human ears, such as those made
by mice and other small animals. They can see in near darkness.

FISH

Fish are an important resource for humans worldwide, especially as food.
Commercial and subsistence fishers hunt fish in wild fisheries or farm them
in ponds or in cages in the ocean. They are also caught by recreational fishers,
kept as pets, raised by fish keepers, and exhibited in public aquaria.Fish have
had a role in culture through the ages, serving as deities, religious symbols,
and as the subjects of art, books and movies.

REPTILES

Reptiles are tetrapod animals from the class Reptilia comprising
today's turtles,crocodilians, snakes, amphisbaenians, lizards, tuatara,
and their extinct relatives. The study of these traditional reptile groups,
historically combined with that of modern amphibians, is called herpetology.

SMALL ANIMALS

All animals are motile, meaning they can move spontaneously and
independently at some point in their lives. Their body plan eventually
becomes fixed as they develop, although some undergo a process
of metamorphosis later on in their lives. All animals are heterotrophs:
they must ingest other organisms or their products for sustenance.