Three days ago I got a pup from a shelter home. He is 3 months old. The mum is a mixed breed with some Border Collie in her. He looks like a German Shepherd and also like he's going to be quite a big dog (massive paws).
He seems fast to learn things but he seems extremely lazy. His favourite activities are barking when other dogs bark in the neighborhood and chewing, anything else he won't do for more than a couple of minutes. He likes to tug but it very quickly gets tired and gets back to lying on the ground and he's got almost no interest in chasing. With a lot of effort you can tease him into a bit of a fight play (he's super gentle with play bites). He also seems super tired after a 30 min walk.
Question: Its it normal for a pup this age to be that exhausted?