I've noticed that some treats seem to get a more aggressive response than others. Sequoia may view these as pretty special.

My experience: Sherman is very gentle, but if he really really likes something, he can get nippy, but I dont think it's aggressive, just enthusiastic. He never growls or snaps or shows aggressive behavior.

Star on the other hand can get downright evil about anything that squeeks. When she starts getting possesive/aggressive (IE- snarling or growling at ME), I have to be dominant right back. What works for me is to grab her collar & lift her slightly away from the object so I can kick it out of her reach & pick it up myself. She doesn't get it back until she settles down and follows a few commands. (Sit, shake, now down). I play with it in front of her before giving it back, too. I only had to do this a couple times before she dropped the aggression bit entirely. I occasionally take favorite things away from her just so she stays clear on who's in charge of "things". (However, I don't give them to another dog, she woud turn her aggression on them.) Some huskies can get pretty pushy.

I also trade them treats for things they have that I need to look at. that works well. And, they always have to sit before they get anything.