Is there anything you can say to a person whose obsession with pets seems to get in the way of ordinary discourse?

NOTE, I am not picking on any jelly here. This question actually came up in the context of another site. (And it’s not a site about pets.)

Some people are apparently just crazy in love with their dogs or cats, even more so than I’ve seen some parents with their kids. They can’t stop posting about them and uploading pictures on thread after thread, their own and other people’s, sometimes several per day from the same person. They apparently expect everyone to share their mad enthusiasm for their beloved furry companions.

It’s fine with me that they love their pets. But I am sick to death of opening an interesting-looking discussion thread and seeing yet another cute photo of somebody’s sweet, cuddly puppy or kitten, followed by a polite chorus of dutifully admiring posts. No amount of affirmation seems to satisfy them; it just seems to bring on more and more of the same.

These aren’t even take-it-or-leave-it links but huge embedded photos that you can’t miss when opening the thread.

Is there any way to tell such pet owners gently but clearly that enough is enough?—that any topic can be done to death and that it’s time to quit assaulting everyone with lethally gagging doses of adorableness?

Sorry if I sound grouchy. I’m not really grouchy. Okay, I’m grouchy.