BEN'S BACK IN THE DOGHOUSE!

BONEHEAD Ben Affleck is in the doghouse with catty wife Jennifer Lopez because the pigheaded Batman star won't wrangle their menagerie of pets or clean up the animals' crap, according to sources, who say the situation's causing a big stink in their 16-month marriage!

"They've got eight dogs and a cat, so it's a complete zoo," dishes an insider. "None of the dogs are properly trained, so they're constantly barking and racing around the house chasing the cat. It's chaos!"

According to the tipster, J.Lo "swears" she's the only one who tries to contain the critters and she's always nagging the Oscar winner to lend a hand- or at least "pick up their poop.

"His answer is to hire people to do it for them. But it really bugs Jennifer because he has more than enough time on his hands. So in her view, he's just being lazy!"