Can a 7 month old puppy be ready to mate?

No, a 7 month old puppy is not ready to mate. Dogs, whether male or female, are not considered sexually mature until they are at least 12 months old, and often even older.

Mating at such an early age is highly discouraged as the puppy's body, reproductive system, and overall maturity may not be developed enough to handle pregnancy and nursing responsibly.

Allowing a young puppy to reproduce can potentially lead to health risks both for the pregnant puppy and her offspring.