Yes technically speaking. Porcupines can do it for hours they just use their tail as a support, stand on their hind legs and throw left hooks, body shots, uppercuts BUT none of them make contact. Its basicaly a weird fake-fight mating dance
no they cant...
cause they'd poke each other's eyes out!
yes
fishers, and occasionally hawks and some snakes
No , the porcupines don't get along because the males fight over the females.
How to Make a Porcupine Puppet