growth rates of my 2 german shepherds

Question
hello i just have a question regarding the weight of my German shepherds. I have a male and a female (brother and sister) and they are 5 months old. They currently weigh 26kg (57 pounds). Their mother was about 37kg (81 pounds) and the father was around 42 kg (92 pounds). roughly how big do you think they will get to at adult size?
also are they growing too fast?
we currently have them on royal cannin but they grew up on eukanuba. is there another food band that you would recommend.
thank you for your help. Emma

Answer
Royal Canin is certainly a much better food than Eukanuba. They'll reach a point at about a year where their growth will slow considerably. You didn't mention what formula RC they are eating but I"m hoping it's not too high in fat and protein , you don't want to force bone growth too quickly and end up with PANO or some other bone issues. Usually you can average a pups size by sizing the parents. So if mom is around 37 and dad is around 42 pups should be somewhere in between. A female of course is likely (though not always) going to be a bit smaller. You should be able to judge by the size of their bones. How large is the base of the tail? Their heads? Sounds like you have two very very nice pups. Enjoy :)
Cindi