Hi latha, Fruits that are safe for pets can be used to make juices. Make sure to remove seeds in case of apples. Prefer seasonal fruits that are safe for pets. Instead you can give them whole fruits as it contains fiber , which aids in digestion.
You can learn more from this blog
https://kuddle.pet/social/blog/the-approved-list-of-fruits-and-vegetables-for-your-dogs#fruits It has a list of all fruits that can be safely given to your puppy Hope it helps.