Hi,

it is simply your puppy is gulping its food too quickly for the stomach to digest and then throws it back up. I would suggest feeding smaller amount and increase the amount of times you feed your pup so that it get the correct amount of food. Once it stops bringing it's food up you can try increasing the food and less feeds a day. A puppy stomach is so delicate until it reaches 6 months of age and great care should be given. You could be feeding your puppy too much.

Have you had your puppy checked at the vets to make sure a blockage isn't there - just in case your puppy has eaten something like a stone - that it can't digest?

Are you measuring the food to make sure too much isn't being fed daily?
Is it a complete dry food or are you guessing the amounts of food to feed?
What are you feeding your puppy on?

These are a few questions to ask yourself - if you email me direct then I could help you out a little more.

Regards
Karen.