Off,,, there's no way on earth a dew claw comes in contact with the ground on a turn,, the dog would have to be horizontal ,,,there one of those things left over from evolution ,,, like our coxsics or appendix ,,,,
Some breeds of dogs have rear dew claws,, and even double rear dew claws,, and some of these breeds those dew claws are just kind of hanging,, they have no control over them...
Or in the case of some who hang out on THL...the brain...