Hi this is my first time, i'm Hils, i need some advice please. Heidi is 7mths old my first staffie, what an excellent breed i'm over the moon with her. Two days ago I took on a friends 9 week old male staffie (Diezel) story is to long to explain, as recomended i bought him his own bed and toys, Heidi takes all his and her toys, he's a feisty little man and tugs them back. what concerns me is the growling, mainly from him, and the nipping from both. Heidi is obviously jelouse and i wonder if i should eliminate the toys? also should i let them continue to growl and nip or stop it, i'm worried that they might become aggresive towards each other to the point of doing an injury. Strangely, Heidi is quite happy for Diezel to sleep in her cage, whilst she lays down anywhere she pleases. I would be grateful for some sound advice as to what i should be doing in the best interest of the dogs.