It probably won't hurt it but it may cause your dog to have diarrhea which could lead to dehydration. You need to watch your dog closely for the next couple of days and make sure it is eating and drinking enough and make sure it goes outside often enough to use the bathroom.
This could all depend on the size, weight, age of the dog as well as how much vaseline it ate. If it's a small dog, then watch it very closely. Larger dogs can usually handle things like this a little better but still may get diarrhea.
This could all depend on the size, weight, age of the dog as well as how much vaseline it ate. If it's a small dog, then watch it very closely. Larger dogs can usually handle things like this a little better but still may get diarrhea.