Hopper

Hopper is an adoptable male Mastiff looking for a home at Los Angeles County - Castaic in Castaic, California. He is fully grown and medium in size. He is currently on the shelter's euthanasia list with just one day left, listed due to lack of space. Adopting Hopper, or even sharing his story, could save a life before it's too late.

HOPPER Animal Location: Santa Clarita Valley - X123 ANIMAL ID: A5800437 DATE ADMITTED TO COUNTY CARE: 2026-10-01 ANIMAL TYPE: DOG AVAILABILITY STATUS: Ready to go home PRIMARY BREED: MASTIFF PRIMARY COLOR: BLACK SEX: Male (Neutered) SIZE: X-LRG WEIGHT: 96 AGE: 4 years 0 months Assessment BEHAVIOR ASSESSMENT DISCLAIMER This assessment reflects the animal's most currently observed behavior and available history at the time of evaluation. This assessment should be considered a snapshot in time that will require updating as new information or behaviors emerge. It should not be relied upon to predict future behavior or as a statement of overall temperament. For additional information about an animal's behavior, please contact the animal care center. EVALUATION DATE: 2026-10-13 UPDATED THE LEGEND: ADULTS ONLY (REQ) i DOG SOCIAL SKILLS: LARGE DOGS OK i SMALL DOG SOCIAL \"OVERALL SCORE\": NEEDS ASSESSMENT i ENERGY LEVEL: MEDIUM i TRAINING RECOMMENDATION: CONTINUED SOCIALIZATION i EVALUATION COMMENTS: The behaviors described today reflect the dog's responses in an Animal Care Center environment and during assessment. A dog's behavior in an Animal Care Center may differ significantly from how they behave in a home. Stress, confinement, and unfamiliar surroundings can cause dogs to act out'or suppress behaviors that may emerge later. A dog's behavior may change based on surroundings, training, medical, socialization, and life experiences. Due to incidents in the previous home, he will be adults required with a history of known aggression.