This process is repeated a large number of times (typically 1,000 or 10,000 times), and for each of these bootstrap samples we compute its mean (each of these are called bootstrap estimates). We now have a histogram of bootstrap means.
Most people are able to safely chew and swallow foods of many different textures. As we chew, food is broken down into small pieces. Saliva moistens and binds food pieces together in preparation for swallowing.A dry or sore mouth can cause problems with chewing and swallowing.
Chewing is definitely a problem if your dog is not getting enough exercise for his/her breed. An option might be to play tug-of-war, catch with a frisbee or ball, or take your dog out for long walks each day. I'd also consider a crate for him when you are not home.