Is This Britain’s Smallest Dog? Tiny Tyson is lighter than a bag of sugar. (SWNS) Above is Tyson, a tiny dog that might just be Britain’s smallest dog. Tyson is only 11 ounces and only four inches tall. It is a Lhasa-Chi, which is a cross between a Lhasa Apso and a Chihuahua. Measuring up: The tiny pup is under five inches high. (SWNS) Tyson the tiny dog gets to grips with one of his toys. (SWNS) Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Like this:Like Loading...