when do male boxers drop testicals?

Question
I ask this because my male boxer is about 8 and a half months old and he shows no sigh of testicals. this worrys me because i want to breed him.

Answer
Testicles are generally in by five weeks of age.

Sorry, but your dog is not breedable as he is sterile due to the body heat surrounding his testicles, and he needs to be neutered because retained testicles have a highly increased chance of becoming cancerous. Retained testicles are a hereditary defect.