My tiny chihuahua Salsa is an agility champion. Despite her weighing not quite 3 pounds, she has titles in USDAA agility, NADAC agility, and CPE agility (our main venue we run in) She has to do the same course as dogs ...gosh...weighing over 20 times what she does and all they change is the jump height and dogs jumping 12 or under get 2 more seconds of time. She is 6.25 inches tall at the shoulder!
Yesterday we were surprised with a package from CPE-a lifetime achievement award meaning she has gotten over 10,000 points.
She really doesn't run much anymore-one or two runs a day at best cuz she is almost 11 and had congestive heart failure (mild and meds are working well for her)
I'm so proud of her.