I had a chihuahua that was fast as lightening. She would tease the roosters. It was really sofunny to watch. She would run up and touch one and then run away and by the time the rooster turned around she was sitting several feet away with a big smile on her face. One rooster started going after her when he thought she wasn't looking but he never got her. She was just too fast. She also helped me get them back in the yard because they would wanter off. She also chased large dogs out of the yard. She was so fast all they could do was run. I wish I had gotten that on video. It never happened when it was handy. She would run them all the way back to their yard then come running back home. The only dog she was ever afraid of was our St Bernard we had at the time. When we let him out of his pen she would run to the house and want in. She used to play with them all till she decided she is just too small to get in with the big dogs when they where playing. Too dangerous. She as a real hoot. I gave her to a disabled man and she is healthy and happy in a home with 2 girls that dress her up. She also liked to wear cloths. She could take them off but couldn't put them on. She would scoot her nose in them and get them around her neck but didn't get her legs in.