Labrador Retriever Question

There is only one breed of labrador. It varies a little from genetics but not that much different. Male dogs usuly are bigger than females so if you are wanting one as big as possible, then a male should grow bigger. Males typically get 22 to 25 inches and 60 to 76 puonds. Females get 21 to 24 inches and 56 to 71 pounds.

There isn't a separate big lab sub species, but you can seek out breeders that breed larger labs. However, I would try to avoid those dogs since they are more likely to have hip and joint issues. I currently have a 135 lb male, and he is not the biggest I've had. That being said he is adopted, and his size isn't a big deal to me. I would recommend you get a Newfoundland if you want the large lab. Labs are bed from News, and the News are typically calmer, and with a large dog calmer is easier since they don't know their size.

You should look at a Newfoundland instead if you want size with lab type behavior. Labs can get large, I currently have a 130 lb male, and I had an even larger one before, but it isn't normal. If you find a breeder that has a large male and large female, you are likely to get large puppies. However, since the breed standard is less than 80 lb, you won't find many quality breeders doing this on purpose. The bigger dogs have more hip problems and in general more health issues, so keep that in mind.