I had one for nearly 18 years and you could do anything to him , the only time he would snap (If you could call it that) was when you tried to strip the hairs from his face , he caught me a few times but it was more playfull than nasty, they are very friendly and never grow up , the only thing that slowed mine down was the stroke he had when he was about 14

They are very intelligent, remember everything and enjoy playing and running around, the only downside is that because of him I'll never have another dog he just couldn't be replaced