Weight loss Great Dane

Question
Both Danes brothers and 4 Yrs. old Ti looks like a champion and
Troy looks lika a bag of bones. He's happy active and no discharges. Could it be a tape worm or something other?

Answer
I would definitely get a fecal sample taken to the vet and also a heart worm test as well...I am not a veterinarian so I cannot tell you exactly what is causing it but if he is not gaining weight then you need to take him in to be looked over for internal parasite.

Anytime that you see significant weight loss you should immediately go to a vet...