There would have to be trillions of four-legged animals that exist on Earth.
One i know of is an Ant Eater . Armadiloes, Ardvarks, Antelopes.
Vizsla is a dog breed recognized by the AKC. It is a 4 legged animal.
The phobia of four legged animals can be referred to as zoophobia. This is the general term used for various phobia related to animals.
All four-legged animals are called Quadrupeds, 'quad' - four; 'ped' - foot.
Most four legged animals
fox !
A wren.
Xoloitzcuintli is a dog breed recognized by the AKC. It is a four legged animal.
camel, cariboo, chimpanzee
Vulpes Velox, or a fox
QUADROPOD