Hi I have a cocker spaniel she is 2 1/2 and her first litter is due in 3 weeks, she has just started to put weight on her sides and now walks with a bit of a waddle she is in good health, I have started to feed her puppy food, she has loads of energy but has started to run off when on a walk and not come back for a while this has happened a couple of times and I am now thinking that it is best to keep her on a lead for the time being, we are really excited and cannot wait for the pups to arrive but also scared and want to get every thing right for her, any advice would be really welcome