how long you going out for each night? and what X is your dog?
3-4 hours average but i do have longer nights. shes 3/4 whippet 1/4 beddy which suits the ground im running but looking at her behaviour she dosnt loose her drive shes just not at the constant quick pace she was?
nothing to worrie about heavily worked dogs dont look over impresive especially on the rabbits mate, like you said they lose there quick pace and tend to catch most of there quarry on the hedge. what you should find is as she has steadied up her running style will chance a bit, and what she lacks in her normal pace