Luigi was only 3 mos when we brought him home. And we got him many toys to play with. And he also loves to hump the ones with legs on them. So we would tell him no and then take them away. But he would sniff and sniff everywhere and go crazy looking for them. So we gave inn= and gave them back. As he he is getting a little older he hasn't been doing it as much. He will just play with them now. But he will be fixed when he is 6 mos. My vet also told me that they will still have tendencies to do that still, its a natural instinct for them.