I don’t understand how the mix up on birth date happened?
When we got our puppy they all had coloured collars. Ours was green. Each dog had a little plastic wallet with a certificate saying the date they were born eith mum and dads names, mum and dads health checks, vet check, first vaccination details, insurance details and microchip details. We collected him when he was 10 weeks and he’d been seen by a vet for a check over then again for his first jabs. We changed the micro chip details while we were there collecting him and that had his dob on as well as his insurance policy.
We took the wallet home alone with his dog food, toys and blanket with his mother’s scent on it. The people we got him off were just a normal family with dogs but they had everything well organised
Also is he old enough to have had his jabs etc? Our puppy was 13 weeks before he could go out after having jabs at 11