Ok this is the second time I saw this.......Bailey was playing with his fur blanket that is on his bed and he plays with it alot, biteing it and swing his head with it. Well the other day I saw when the blanket was between his legs his butt was going up and down but I didn't pay it no mind because he was still swinging his head with the blanket in his mouth so I though he was doing that because he was playing well TONIGHT while playing with his blanket he was doing it again but then when he did it the second time tonight his blanket wasn't even in his month and his butt was going up and down SO I knew it wasn't from the motion of him playing and that he was really humping

it only lasted like 5 secs each time but Bailey will be 4 1/2 months this Tuesday so can anyone tell me is this normal for this age......and if this is the begining signs how can I stop it.....I plan on getting him fixed when he turns 6 months?? HELP!!!