[anonymous]

Maybe the sardines didn’t agree with him. They are high in sodium.
For a low calorie snack I give my dogs 1/2 of a raw carrot here and there.
If you try this, don’t be alarmed if you see orange carrot chunks in their feces, they don’t really digest them but it doesn’t hurt them, it’s all fiber.
PS: Also, make sure the dog chews the carrot, some dogs try to swallow them whole (choking hazard), in that case, maybe chopping them up would be better.