Meet Briggs All about Briggs Briggs is a 5 months old male Medium Mixed Breed who weighs 15 pounds and has been with us for 79 days. Note that many dogs do not reach full size until they are about a year and a half old. The weight listed here is the dog's current weight. Photos (click for full-size) Additional Information Housetrained: Unknown or unspecified Has lived with animals: No Has lived with children: No × < >