mark the big head thing is a joke, you must lern to laff at yourself.
mark why are you carrying on with this , i have already explaind why i think they have staminar, what more do you want
i will repeat for ya.
1 you keep them very fit and work them alot. ( credit to ya)
2 whipp/greys usualy have not bad staminar. not as much as a coliegrey granted , but not bad for a running dog
3 there is a small amount of colie, maybee enough to have a baring , on there staminar.
5 not all dogs are the same, in other words some pure running dogs have staminar , just luck maybe