Over the years my dog has been taking on weight. I didn’t notice at first until I was going through some pictures of him when he was at a healthy weight. I am not sure what type of dog he is, but I assume he is mixed with Chihuahua. So my question is, what are some ways I could start to take off the weight without going to the vet? I cannot check him in the vet due to my personal situation right now. Can you give me some ideas of ways to get him back to shape? Thank you.