Demi is allergic to her dog!

Demi Lovato loves animals so much. The "Made in the USA" singer has four dogs, but has a shocking secret to share about one of them. "I like shih tzu's because I have three of them," Demi spills. "My other dog is a mutt, and I have to be careful because I'm allergic to her!" Yep, you read that right. Demi's allergic to her own dog! It doesn't bother her, though. "It's gotten better now, but I always have to take Benadryl," she spills about petting the pup.