yikes they differ here is another one
http://www.petplanet.co.uk/petplanet...re_Terrier.htm
minimum max.
Bitch 18cm (7ins) 20cm (8ins)
Dog 18cm (7ins) 20cm (8ins)
minumum max.
Bitch 2kg (4lbs) 3kg (7lbs)
Dog 2kg (4lbs) 3kg (7lbs)
Size Category
Tiny
Weight Height Range
The Yorkshire Terrier is a toy dog, weighing in at between 2 - 3 kg and stands no taller than 20.5 cm.