Are Zelda and Zeus Boxer Puppies?

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******PLEASE LEAVE A COMMENT*****WHAT KIND OF PUPPY******

We rescued them from a young homeless guy. He said he knew the mom was a chocolate lab but doesn't know the father. We are trying to figure it out for fun and also because they were to young to be away from their mother. For feeding purposes we would like to know the breed. My husband and I have different opinions on this.
Thank You