He has been diagnosed with brain damage by my vet. He was about 3 to 4 weeks behind his sister. His birth was very bad as he was breech and was stuck in the birth canal so was starved of oxygen at birth is how my vet described him. I adore him and his is not in trouble when he does it I try to catch him before he does it and take him outside but sometimes I don't catch him though he is a pug and very cute :)