I got home from work and took him out and I did not notice him at all.  He is blowing his coat right now but we brush them once a week when they are. He is crated from 9-3 but on my hour break he is let outside for the entire time.  Today at lunch I did not notice it.  I didnt even notice it until I bought him back in from letting him out after work.  I checked his stomach for fleas or ticks and not see any at all.  I even got a jeweler's loupe and looked. So honestly it looked like it happened only when I brought him outside.  He was outside for about 30 minutes. ÂÂ
He does not get nervous when we leave, we broke both of our dogs of the early by freezing peanut butter and putting it in Kongs and giving that to them after every time we left the house.  That broke them very quickly.  When we leave he just lays down and acts fine. ÂÂ
He is fed Wellness Puppy Diet, the same food he has been fed all his life.  Our older female gets fed wellness core and went from wellness puppy to wellness core for her entire life too.  He is still very active and acts himself. ÂÂ
We are so worried ÂÂ
Also will it grow back like normal if he has been chewing on it or if something happened to it?
I called my vet but they did not answer so that is why I am turning to the internet. My female is 3 years old and my male is 9 months and they get along great. They are kept in separate crates during the day of course.