Lisa Robertson Not me but my oldest has an amazing bond with mum younger collie Mars. At home he keeps a close eye on our 5 year old collie lad. Sadly, we recently lost our old boy at 15 yrs old but I adore the way that at no point was he ever ‘pulled around’ by our son. Instead our son has learnt to train and praise when needed, he’s learnt to pay attention to the animals around him through the dogs. He was 8 weeks old when our younger dog turned up at 16 weeks so they have apparently grown up together.