Ashley Monroe is begging for help. On Thursday night (April 7), her beloved Chihuahua, Rosie, went missing. The singer posted several messages and photos of Rosie on Twitter over the past few hours in hopes that someone would find her pet.

"She was last seen behind Lenox creekside... On the sidewalk.. Then gone.. ," Monroe writes.

Monroe adopted Rosie from Miranda Lambert, who rescued her in Oklahoma. Earlier this year, Lambert posted a photo with Rosie from the day she found her.

"2014 when I assisted on a last minute rescue mission in Oklahoma and found my future puppy niece Rosie (and her sister Petunia) @ashleymonroemusic I'm so glad you adopted these Angels," she said.

Fans and friends have been sharing Monroe's post in hopes of finding her beloved dog. Lambert's MuttNation Foundation is also assisting in the hunt, urging fans to contact them if they have any information on the missing dog.

Lambert recently launched a new line for pets that helps raise money for her charity MuttNation Foundation, which helps shelter pets find loving homes. The line will sell pet gear including bedding, collars and leashes, toys, apparel and more.

"The creation of MuttNation is a dream come true. It’s an extension of me and my mom’s love for all dogs and our goal of helping every dog find a happy, loving home,” Lambert says. “We are beyond thrilled to have Petmate as a committed and trustworthy partner that shares that same vision. There are millions of beautiful dogs looking for homes and it is our hope that in addition to raising money, we will raise awareness to the joy of adopting a shelter pet."

The pet gear line will also include plush dog toys, modeled after each rescue pups' story. Every purchase from the MuttNation Fueled by Miranda Lambert brand will benefit the rescue and adoption efforts of the foundation.

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