Lambert recently donated proceeds from the Route 91 Harvest Festival benefit event Cause for the Paws to help the foundation, which she founded with her mother, Bev. A total of $628,148 was raised from the event, which was held in Las Vegas earlier this month.

"I always have a great time in Vegas, but being able to save dogs along the way was probably the best," Lambert said in a press release. "Getting to do what I love and help the cause that's closest to my heart, and do it in Vegas; it doesn't get any better. With the money raised, I am looking forward to seeing lots of dogs find loving forever homes through adoption."