It was fine enough when the new human was first born, but as time goes by, it just gets more obnoxious. These animals have had enough of their little antics, and they're not afraid to show it.
"For YEARS I've been asking for a pool, and as soon as the human asks for one we get one? HOW IS THAT FAIR?!"
"It's just that he finds obnoxious joy in EVERYTHING."
"First steps? Help us all, it's mobile now."
"ENOUGH with the STUPID TOYS."
"Why is this happening to my head right now. Why."
"I'm done with YOU and with YOU and with YOU!"
"I've had more than enough of that smile on this little creature."
"Oh, he's taking MY BED now? What next?!"
"You can run, but you can't hide the fact that YOU STOLE MY SANDWICH."
"If you're not even fast enough to get your own toy, you don't deserve to have it."
"On the computer again? If you insist on living in this house, at least play with me."
"Don't you DARE take that cookie away from me."
"Why do you insist on ruining EVERY PICTURE?!"
"I am no one's pillow."
"I refused to be associated with those fools."
"Look at meeee, I'm the little human! I can barely mooove!"
"How many times do we have to tell you that this is where we like to run?"
"All I'm trying to do is relax on the couch, and you just HAVE to come bug me."
"Okay, fine. Maybe the kid makes a good pillow after all."