I am so sorry for your loss. I still cry over my losing very difficult but extremely devoted Basenji, Ella.
My 3-year old basenji, Lana, growls and bites at the other two dogs every time when she goes outside. It doesn't matter if she's been away all day or if she just came in the house for five minutes, if she goes back out into the backyard, she jumps at the other two dogs, especially Mishka the akita. The other two dogs don't do anything to aggravate or annoy her, they just stand at the door, greeting me, yet Lana jumps at them and growls and bites Mishka's ears. She just started doing that recently, maybe a couple of months ago. The other two dogs grew up with her, and they are still puppies (1 year old and 20 months), and never as much as look at her aggressively. Is it just dominance issue or something else?