Butt Tucking....that I am familiar with. Our female Chihuahua, Hazel, runs in butt tuck fashion. Always has...from the time she was big enough to run...maybe 1.5 pounds. Every one in the family gets a laugh out of watching her run...because she always runs in butt tuck formation. That's the only way she knows how to run. And she is a surprisingly fast runner for a dog with 4 inch legs. She is 8 pounds, pure beefy, stocky muscle. Deep chest, wide shoulders, and short thick legs. Very bulldog/Boxer looking profile from the side...deep chest, small waist. She only looks like a Chihuahua from the neck up.
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