@matigo My Dachshund mix has some hunting instincts. She caught and killed a mouse once, almost killed a bird, regularly digs for chipmunks, and it was up for grabs when we found a 10-day-old kitten if she’d treat it as prey or not. (They wound up best friends and play-fight to this day.)
This killer instinct is mostly completely trounced in practice by her total nervous nelly behavior around anything loud. The Chihuahua mix is not doing her any favors there.