They are adjectives that all mean "like an animal" because they are derived from the Greek or Latin words for animals.
feline = like a cat.
canine = like a dog.
avian = like a bird.
equine = like a horse.
Bovine, ovine, lupine, feline, canine, vulpine...
If you mean the beagle puppy it is lou. If you mean the dog that ran away at the begining its Buddy.
If a dog-like animal is a canine then a cat-like animal is a feline.(Those words are taken from Latin, the original language used by the ancient Romans.)
Feline
equine
atrium, structure, canine
feline.
equine,equidox,equilibrium etc...
aqua equine equal
Feline domesticated animals
Aviation, avian, avuncular, aviatrix,avalanche, avoid.
Equine, equitation, equestrian, equidistant