Jellyfish
A cat is an animal.
Jellyfish. They have 4 hearts and no brain.
yes.
starfish
Totally depends on the animal, (a dog's brain is so very much larger than a fly's)
all of them, the brain is inside the skull
That would probably depend on what the brain is from. Animal, Human?
Starfish have five arms and no brain.
the less healthy the brain
you dont have a brain..
non
The Animal with the largest brain is the Sperm Whale (Cachalot) (Physeter Macrocephalus)