Britney Spears Clutches Stuffed Rabbit in Return to U.S. From Mexico

Britney Spears has a new bed companion ... no, not a model with rock-hard abs -- it's actually a stuffed rabbit she brought back from Mexico.

The singer-songwriter left Cabo, Mexico to get back to Los Angeles Thursday -- bringing her new furry friend back from south of the border.

She's holding her new pal tight in Mexico -- covering up most of her face with it while adding a black hat and dark sunglasses to her look.

Spears landed in Los Angeles just a few short hours later ... messing around on her phone -- with the rabbit still held close to her body.

Seems like Britney had a heck of a time down in Mexico ... like we told you, she posted her most energetic dance video yet Wednesday -- smacking her booty, shoving her thumbs in her underwear and chaotically swinging around her room.

BTW ... the rabbit made an appearance during the wild dancing clip -- staring deeply into the camera, with the whole video set to tracks off her "Blackout" album, the last she released before she was put into a years-long conservatorship.

The vid she posted earlier this week was far from the only one Brit took. She also shared another clip earlier this month in a low-cut silver top ... full of spins, kicks and more.

She claimed she planned to move to Mexico ... though, as we told you, she didn't end up doing it.

Looks like she's got a new conejo friend to remind her of all the good times.