My puppy ate tuna and is acting tired with little poop. Is she okay?

Hello, and thanks for your question about Kitty. Tuna is generally a pretty safe thing for a dog to eat, and I think chances are Kitty will be fine. However, any time a dog gets into something they're not used to, or a fattier than usual meal, it's possible that it could trigger some GI upset. As long as Kitty remains bright and playful with a normal appetite, then she should do just fine and the minimal stool production doesn't worry me. However, if her appetite drops, she seems lethargic, or starts vomiting then I'd have her looked at by the vet in case she is developing pancreatitis.

Hope this helps!