Gunny had severe flea allergies, other that that, he was as healthy and as strong as a horse.. Sophie (sister) has no allergies and also as strong as a horse.. Gunny wieghed about 65 lbs at 2yrs old, Sophie weighes about 90 lbs now... both have/had wonderful disposition to them, but very protective and territorial. both love pups, but not dogs, unless they came into the house as pups. both LOVE babies, adults (if they know you), but dont you dare try to enter the house from the back door.. it would surely mean certian injury to your persons.. the back yard is off limits to anyone they dont know. Gunny looked pure boxer, while Sophie looks like an agentino doge she is large and in charge.. of everything.. lol.. i for one do not believe it is totally in how they are raised, i believe that some of it has to do with dna and certain markers within, for temperament, (as i have raised pitts, boxers, labs, mixes of both) not all are the same.. but you can tell early on. i would insert pics of them, but honestly, i dont know how, but you are more than welcome to see my small album here, or friend me on facebook to see pictures galore, of all my fur babies from 4 weeks to current.