Now that our puppy has all her shots we have been taking her for daily walks. (She is 4 mos old.) Right now she gets two ten minute walks and one 30 minute walk daily and we walk at a very brisk pace. I was thinking about extending the 30 min. walk to 40-45 minutes, but I also just read in another forum that it's not a good idea to do long walks until the puppy is a year. What is considered a long walk? I know she is growing and don't want to cause any injuries by putting too much stress on her joints and bones. She is doing well on her walks now and has so much energy to expend. Any advice would be appreciated. Thanks!