Did your Chi bite as a puppy if you tried to take away something from his mouth?I don't know if this will help but we have a deer legged chiuaha and an Austrailian shepherd the Chiuaha was so fast and agile she couldn't catch him no dog could it was unreal he was good with all dogs my daughter's have husky Anitolian mix, Pitts, teacups they all get along. I think if you introduce them the right way your GSD will adopt what ever she get but all dogs react differently
This ^. If the situation is unavoidable, train your GSD to just leave it alone at all costs. My GSD 10 month old LOVES my cats. She tries to cuddle with them constantly and would die to play with them. It makes her so happy. But we’ve trained her to just stay away completely. She’s a puppy so it’s still in progress but working.I had a 3 x GSD's when I was a teenager, my mom had a Chihuahua.
Chihuahua got into their compound and growled at one of my bitches. My bitch gave it a correction; Chihuahua dead.
A GSD is much larger and big dogs do not go easy on smaller dogs. If the chihuahua was the same size then the correction would have been minimal but for the chihuahua, it was full force.
I have a small dog but I keep my GSD well away from it.
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