Dacshunds are bred to hunt badgers. The hound follows a scent. I have a Dachshund. He does not give up or forget a scent. A chipmunk ran up the molding of our new shed. This 20 pound dog started ripping off that molding to get to this chipmunk. Luckily we were in the yard when it happened. We were stunned when we looked toward the odd noise. My husband ran over and grabbed him. My dog did not want to let go or forget. We blocked our shed off for 3 weeks. Finally the attack on the shed to get to the problem animal was over. I assume the scent finally faded and he moved on. The most tenacious dog Is a Dachshund. They will not give up.