Hello everyone, hope you might be able to help with something that's really
troubling me...

I have a 3yo female yorkie named Winnie that was spayed this month. She had
one litter in October and was spayed after her heat cycle (February).
Winnie has two older 'brothers' that are 8yo 65 lb golden mixes. After the
spay, she started displaying an agressive behavior towards one of them
(Toby), attacking him just for walking in the room and growling if he even
comes within earshot. So far he's restrained himself from responding, but
he has a history of nipping.

Is this a normal post-spay behavior? She was never agressive before and
isn't agressive with the puppies or with Casey (the golden x bassett). Any
suggestions to get them back into a friendly relationship?

Thanks for your help!

Karyn Hamilton