Answer:
They can swim but they’re not fish, they are slow but they are not turtles, they live and hang from tree but they’re not monkeys. What are they?
A stellar five-limbed sea creature.
My first is twice in apple but not once in tart. My second is in liver but not in heart. My third is in giant and also in ghost. Whole I'm best when I am toast.
It's voice is like a burp, Will swallow with a slurp, You'll never hear it chirp. Kiss it with a wince, Might turn into a prince
I have eight to spare and am covered with hair.
Known for their natural tuxedos and marching.