Hi,
I agree completely gryphon, but was explaining that most PHs don't want a dog trailing them on the whole hunt for fear of spooking game. This could be prevented by training it to walk behind the last member of the hunting party, or (in the case of a terrier) held by a tracker.
I have seen pictures of EU hunters putting terriers in their backpack, with just the head/shoulders sticking out (I don't know what the African heat would do though)