Fish Maw revisited

It does not have paws, neither is it claws,
This animal wont be seen on a see saw.
It might go through doors,
if you force it on all fours;
But you better not call it a boar,
it will surely kick you in the jaw.
I am sorry its not against the law,
for me to not be like George Bernard Shaw;
so you better be prepared for more,
for i am your one and only hee haw hee haw.