Mastiff for Adoption in Riverside, California

Meet Merlin! He is a 4 year old Mastiff. Merlin was rescued from the shelter over three months ago. He...

The Mastiff, a large and powerful breed with a history dating back to ancient times, is known for its gentle and loyal nature. These dogs are devoted family companions, often forming strong bonds with their owners. Despite their imposing size, Mastiffs are typically calm and patient, making them excellent protectors and watchdogs. With a distinctive wrinkled face and a massive build, Mastiffs require proper training and socialization to thrive in various environments.

Underdog Heroes is a volunteer and donation based nonprofit animal rescue. It is our mission to provide shelter, medical care,...