How much should a 1 year old Great Pyrenees weight?
A male Great Pyrenees should weight at least 95-110 pounds at 1 year of age. A female Great Pyrenees would be slightly smaller at least 80-95 pounds. You can expect your dog to gain another 5-15 pounds between his first and second birthday.
If your Great Pyrenees is considerably smaller and lighter, take him to the vet. An intestinal parasite might cause malnutrition and keep him from growing. As a large breed, Great Pyrenees are prone to being “skinny teenagers” and will require a lot of daily calories during their rapid growth in the first year.
A worm infestation could cause your Great Pyrenees to not grow as usual, however this is quickly diagnosed and treated by a veterinarian.