Buddy is loosing hair on his elbows I would understand that if he was out on concrete. Buddy spends most of his time indoors we have wall to wall carpet so would not think carpet would cause it. When he is out side he has a Kuranda dog bed on the Patio, does not have the fleece pad on it because he would remove it & eat it.When in his crate he has the 4" dog bed that is tied down to the bottom of the crate. The dog bed in the crate and the Kuranda bed is made out of that Cordura material which is chew resitant but seems a bit rough to the touch???Then has a soft blanket folded to fit in the crate.Buddy also has a hard little spot on one elbow have been trying to wait till the heat is better. I usually take him to where his other Mom (breeder) works as a vet tech she trims his nails once a month.Even though I have air conditioning in my car it was 105* this afternoon with a heat index of 109* just too hot to have a dog in a car even for 20 minutes with the air conditioning on.Hope to go on Friday suppose to be 98* a cool front coming in where is Fall.