Gaining weight a rotweiller?

How old is your dog and what are you presently feeding and how much ?

Tick

Along with Tick's questions, how much does your rotti weigh now? Has she been de wormed and up to date with vaccines, spayed or neutered and most of all, what does your vet say about your dogs current weight?

This is really just to vague to answer. Do you want it to gain weight and if so why? Is it gaining weight and you don't know why? Not to mention all the other good questions already asked here...