Originally Posted by ANBshilling
Am I supposed to fill the WHOLE thing up? How does he get the pb at the small end? I want him to have to work on it a while, you know, make it hard, BUT I still want him to get rewarded at the same time.
This will depend on your dog - not really any right or wrong answer. There are some dogs who will work for hours to get every little bit out, in which case filling it full will keep them occupied. My dogs will go at them for about 30-45 mins before they get bored, so we only fill part way (a large spoonfull of PB for the med sized kong).