If you are thinking of the hound from hell, it's Cerberus
Scallops
nothing its just called animal heads
Cerberus And in greek myths the three headed fire spewing beast is the hydra he pooped in your moms mouth
The entire thing is called a compound eye, with many facets, or ommatidia (simple individual eyes). Insects also have three non-compound eyes between their large compound eyes, on the top of their heads. These are called ocelli.
schereus
Insects .
A name for a three-legged animal could be a "tripod."
Tuatara
Hypno-Toad
Because most animals do...Why do i have eyes on the front of my head? this answers is not a good answer i can name tonnes of animals that have eyes on the sides of their heads, and birds too.
A a child or other young animal born with two heads is called dicephalic.
The Tuatara, a lizardlike reptile that lives only in New Zealand, has those three "eyes". It belongs to a group of reptiles that once included many other creatures, but today, the Tuatara is the only surviving member of that group.