My dog is very dependent on both me and my partner. To the point where I constantly trip over him because he is always by my feet. Today I noticed a rather funny habit and thought it might be due to his personality. He has had this bone that he has carried around for months now. Not once has he tried to eat it but if the other dog has it he will take it away from her. The only way he will eat it is if I hold half of it while he munches on it. He does not do this with every treat but if it is a big bone/treat he tends to do this. Is this behaviour normal for an animal? Is it something I should be concerned about and try to break?