Pet Mischief Enthusiast T-Shirts

Dog makes cats float with helium.

"Here it comes, another one of his classic non-apologies."

"Why, you little Shih Tzu."

Cat Heaven vs Mouse Hell.

Cat rolls up yarn like power cord.

Rusty, not believing in God, seized his chance...

"What part of 'giddyup' don't you understand?"

"I have a couple of other projects I'm excited about."

"Pssst. Fake poop."

'Marm doesn't understand, 'I've got it, I've got it'.'

"What? Don't yuck my yum!"

Separation

"Don't make me send in the bad cat."

"Isn't it true that the prosecution offered you a bone to testify?"

'No, I'm pretty sure she said, 'Sit!'

"He wants a second opinion."

Predator, Inc bought Prey, Ltd

"The guy I bought him from says he's a pure sheepdog."

"He still doesn't know how to use the litter tray."

'We're all experts in one thing or another. For instance, I consider myself something of a specialist in fluid dynamics...'

"I love to watch cat videos on the internet!"

"Yes, he's drinking from the bird bath, but I've seen him doing much worse! I caught him drinking from the toilet once!"

Stunt Fly flying through a cow.

"Dear God, no! Not her first edition of 'Franny and Zooey'! You've ruined us!!"

'The cat did it.'

"Is this your work?"

"See. I told you they have Roomba Rodeos when we're gone."

"My dog ate my parents' marijuana, and then ate my homework."

"Yes, it's embarrassing, but my master has a broken leg, so this is the only way I can go for a walk right now...

'Painter'

Cat tipping a fish out of a bird box

'Okay, let me see your hands, your feet, and that wily prehensile tail...'

'Journey of self-discovery' Dog realizes he can make his leg move when he scratches.

Dog reaching over top of counter to steal cookies.

'I love this web TV, and so user friendly.'