Little Jamie is now 16 weeks and has had his third set of shots, so I've been taking him on short walks in the neighbourhood. He's mostly interested in sniffing where dogs have peed and is wary of sounds, cars passing, people approaching, and has only recently met people when he is on the ground. He does approach, backup, approach, backup with is bum in the air. Eventually he will approach and stay for a pet. So, though he gets over things quickly, he seems quite nervous about new things. The other day there was a dog barking in a house we were passing and Jamie turned around and pulled on the leash to go home. I let him put distance as he needs it, but there are lots of dogs in our neighbourhood. I don't know if he's a particularly nervous dog or it's just so new to him. Also, I don't know how I should deal with other dogs on leash approaching. At what point should I let him greet or be greeted by other dogs? He doesn't have any experience other than his litter mates. Fraser, being a spaniel, was all waggy tail and greeting keen, but this pup is more wary. Any ideas of how to approach widening his world now that he's fully vaccinated?