I have a Dachshund too thin. My problem with her is she was extremely picky and would get bored of food often. I could only get her eating with pharmaceuticals that in the long run would have caused pancreatitis or liver issues. Bought this as a last resort and I wish I had bought it earlier. She is starting to gain weight 2 weeks in, she LOVES her food and this has been stimulating her appetite like CRAZY. She always asks for more food. Could not recommend this enough. BEST product out there.