There are plenty of celebrities who love animals, but others take that love just a little too far.

While stars are known for hooking up with PETA and championing animal rights (horny cows everywhere are currently mooing "thanks" to Ryan Gosling), some A-listers seem to take their devotion to a whole other level by engaging in PDA sessions with their pets that rival the steamiest scenes from their movies! No matter how you slice it, letting a dog lick your lips is simply gross. We all know where that tongue has been...

So, in honor of National Pet Day, check out our roundup of 16 celebrities whose love for their pets has us feeling a liiittle queasy!

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1. Kim Kardashian

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Kim snapped this photo upon arriving at her nephew's birthday party, clearly missing Kanye West at the time. How else to explain planting one on a snot-filled snout?


2. Paris Hilton

Sorry, Paris. This photo is not hot. At all. Let's just hope she brushed her teeth before inevitably going off to make out with a boy afterwards.


3. Selena Gomez

Selena rescued her dog, a husky named Baylor, while on tour in Canada. It's been love at first sight ever since. If she no longer wants Justin Bieber, Baylor looks to be a suitable replacement for now. (And is likely more mature.)


4. Paula Abdul

Paula's dog giving her a tongue mustache is questionable enough, but the grossest part of this photo is that she bought a pearl necklance collar for her pooch.


5. Ryan Gosling

Every woman and gay man in America would love to be that bulldog. Just saying.


6. Amanda Seyfried

Amanda recently admitted to never being sober on talk shows, which makes us wonder if she had just come out of an appearance on one when this intense PDA photo was snapped.


7. Katy Perry

Okay, so we're pretty sure that Katy doesn't own a pet kangaroo. It's still pretty effing awesome, thoygh.


8. Eva Mendes

This is the mouth that kisses Ryan Gosling? Now we know why Eva's kissing scenes in her film roles are so steamy.. practice by any means encessary. We admire dedication to your craft, but this is taking things too far.


9. Britney Spears

Back in Britney's cray-cray days in 2007, this photo made its way around the web in two seconds. We're not sure what we had more of an objection to... the awful wig, the over-the-top makeout, or the fact she has her dog in her lap while she's about to drive? We almost preferred her ramming parked cars with an umbrella.


10. Julianne Hough

The two-time Dancing with the Stars champion loves her two Cavalier King Charles spaniels, to the point that she even has socks with their image on them! However, the openly single Julianne may want to make sure she's not getting too attached to her pets, because nobody wants a dog's sloppy seconds.


11. Hayden Panettiere

It seems that Hayden didn't have much of a say in this pet PDA moment, because her beast of a dog was claiming a kiss by any means necessary. Then again, his owner is Hayden. Can anyone blame him?


12. Coco

Seriously, can Ice-T's wife do anything that isn't overtly sexual? Anything at all?


13. Miley Cyrus

Miley's relationship with fiance Liam Hemsworth may or may not be on the rocks, but it looks like she has plenty of other options for a makeout session if things truly come to an end there.


14. Will Smith

Will and his wife Jada Pinkett Smith are reportedly in an open relationship, but we're willing to bet that even Jada would have a problem with this one...


15. Betty White

Betty has said more than once that she prefers to be around animals instead of people. And who can blame her? She's even found ways to use them that go beyond mere compassionship... like a last-minute substitute when you run out of dental floss.


16. Janice Dickinson

Look, we never expected Janice to be classy in anything she does. This photo is just too much, though. Leaning in to get French kissed. The messy hair in the back. The cleavage. It's a look that's miles away from her supermodel heyday.

Which celebrity/pet PDA do you think was the most over-the-top?

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