He stops when he sees the stairs and would not climb or move. I have to lift him and then go up the stairs. When I put him down on floor, he then walks comfortably. Why will he not climb stairs? He will also not go down the stairs. I have to lift him and go downstairs. Then too when I put him on floor, he starts walking comfortably.
he is 2 years old and has perfect health. labrador mix is the breed