hi mate.
i have a 5/8.. 3/8 bull greyhound. i had him at 8 weeks old, hoping that he will make 25.26inches, all the brothers and sisters were 25/26, and mine turned out to be24".. i too was worried about his height. but now its 2 1/2 years old and he will take all legal quarry with ease, single handed. si i wouldnt worry to much about the height...