DD, age 5, and I went on a bike ride today. She was leading and as she went past a garden she started singing very loudly. A massive Rottweiler jumped up at garden gate and barked really loudly, making DD jump so much she fell off her bike. Luckily she fell onto grass and was fine, owner went it to garden to see why dog was barking, said he was friendly and DD was stroking him so all fine in my opinion. When she told DP tonight however he thought I should've had a go at the dog owner and that such a big dog shouldn't be in front garden. WIBU to not have said anything?