How much does MacFarlane love anthropomorphic critters? That's like asking how much Brian Griffin from Family Guy loves drinking, being pretentious, and ogling Lois. Or, to put it another way, how much a talking bear likes to s--- in the woods. Regardless, the answer is ''a lot.''
See also: The goldfish Klaus from American Dad, the bears Tim and Arianna from The Cleveland Show, and, of course, Ted from Ted.