>>2537885Dogs are kind of muscular yeah, they don't have much skin too depending on the species.
I think cats always have skin. In fact, cats have a thing called primordial pouch. Cats aren't that muscular because muscles are heavy, and cats are specialized in being silent and mobile. I think they also have thin and a little less bones.
Fun fact birds have mostly hollow bones so they can fly but still have a structure.
Fun fact humans are only of the if not the only animal to not have bones in our penises. That allows us to have a larger variation of size in our cocks.
Fun fact we have the biggest penis to body ratio of all primates, I think. However, not the biggest penors out of mammals because holy shit I've seen animals with penises bigger than their bodies. Funny that we see horse on human porn but never whale on human porn, or tapirs.
Fun fact dolphins, when erect, can use their penises to grab stuff.
Funnier fact, since there are recorded cases of ATTEMPTED rape by dolphins, there's a chance that there might be UNREPORTED cases of dolphin rape, not reported because anyone who gets successfully raped by a dolphin is never seen again, for think about this next time you hear about someone who disappeared at sea, and remember that your chances of being dicked to death by us are low but bigger than 0.