I used to put my first lurcher in the nappy bag on the back of the pram - before he'd had his jabs - so he could get out and about with all of us. As soon as they've had their jabs, nice gentle walks, lots of sniffing, meeting nice dogs and people, exposure to traffic and other noises ..... very important to building a steady character. If you're turning the pup out to play and run with your own dogs on the paddock, then the walking bit is more for socialisation and experience than exercise.
My pup is 5 1/2 months old now, very very steady on lead and easy to handle. She doesn't spook or