Update training

My boy (9Mths neutered) has just started his advanced training. He was in with the big girls and boys and took to it like a duck to water.

We are concentrating on his down stay as he needs more work on this but they have fun time where we hide a piece of hotdog sausage and they have to find it. He is learning sooo fast i am so proud of him. He has also learnt to roll over which is very cute.

One quick question. My husband sometimes takes him to work ( he is a builder) he loves going out with his Dad and cannot wait to get in the van but when he is with him he barks at everyone and everything. He never does that when he is with me so I don't understand his behaviour. Why does he feel the need to protect his dad and not his mom.