In The Dog House! Lisa Vanderpump Furious With Dorit Kemsley Over Rescued Pup She Abandoned At A Shelter

In the dog house!

Drama is already brewing during filming for the upcoming season 9 of Real Housewives of Beverly Hills — and this time it's Dorit Kemsley vs. Lisa Vanderpump.

A source tells RadarOnline.com exclusively Vanderpump blacklisted the bubbly blonde after she adopted a pup from the restaurateur's rescue only to dump the dog off at a shelter soon thereafter.

Kemsley is said to have given the adorable chihuahua mix to a local animal home after the pooch "nipped" at her kids.

Upon its arrival to the shelter, the dog was microchipped as belonging to Vanderpump Dogs.

"Too say Lisa is pissed is an understatement," tattled the insider. "Having one of her dogs ends up in a shelter places her rescue organization in jeopardy because it's a new business."

"She doesn’t want to be known for placing dogs in unsuitable homes."

Production insiders reveal to RadarOnline.com exclusively the drama unfolded during a filmed trip to the Bahamas, with Lisa either fuming or in tears. "She got the dog out of the shelter and has just been so upset about it."

What's more — a pal close to the pair says Kemsley's offered "really no explanation" about why she chose to give the dog away and not return it to Lisa, or at least notify her about it.

"It has really strained their friendship,” a source revealed of the frenemies rift, which insiders tell RadarOnline.com was a hot topic among the ladies at newbie cast member Denise Richards' Malibu wedding to Aaron Phypers last weekend.