Betty is still tiny weeny though! I think she could climb inside a full sized kong.Betty still has a small kong as a treat sometimes when I go out, i just stick some cream cheese and sausage in it and it keeps her occupied. I didn't want a big kong as I felt there would be too much in there, the small one is perfect for that.
As for hot dogs, i used the Herta ones that just need cooking for a few minutes and chopped them into tiny pieces.
The hot dogs I use are the ones in packets in the cooked meat isle, Frankfurters, chicken flavour. I cut them up into bite size chunks, pop them into snack bags or any small plastic bags and pop the bags in the freezer for later use. They defrost in a couple of hours.