Can my puppy have 2% milk? A while back we had a bowl of sugar milk out for my cat, the dog had a little bit and went insane trying to get more. Is 2% store milk healthy for her?

Puppies (and cats) don't produce enough of the enzyme needed to properly digest the lactose in milk so I wouldn't recommend it as it is likely to cause digestive upset. And cow's milk has a lot more lactose than bitches milk does.