
I cant speak for whippets but I can speak for hounds in general (having experience of Afghans and Dachsunds) and they will do anything to avoid water - in fact the dachsunds would rather go without a walk than go out in the rain - handy for me :D
This is just a generalisation, at the end of the day it will depend on the individual dog. But as a rule hounds are not like labs :)