My pup just went through what I'm hoping is her last big growth spurt (she just turned one year old), and now she's somewhat thin. She's a finicky eater and I've heard that's somewhat common in GSDs. Does anyone give their dogs extra supplements for weight gain? I already give her an excellent pre/probiotic (Companion's Choice) with every feeding. I try to feed her 4 cups a day, but she rarely eats it all. She's in the low 60s now, but I think she should gain about 7lb.