Can I give my puppy regular milk?

No. Cow milk and dog milk are not the same things. And so if you are going to be getting your puppy milk if you got it whenever it was young or something along those lines, and it still needs that, make sure that you're getting a puppy milk replacer, which is available at a lot of different hardware stores, pet supply stores, Walmart, and other places like that. You don't want to feed cow milk as that will cause them to have an upset belly. It's not going to be near as nutritionally supportive.