When good dogs go bad

while i was painting the second painting, my smooth collie joined me, as he often does.  i was in the zone and kept hearing weird noises behind me.  i look around and the all red "summer" is covered in lick marks and this was staring at me.  luckily i took the pic of the painting below before he licked- i sort of fixed it but it will never be the same.  it has collie marks now.