The Kong toys were used for our dogs in the kennel for kennel stress, and given with adoptions of the same type dogs.
It greatly relieves their kennel stress and helps them to relax.
We had a very high-stress dog named Norman (first and second photos). Having the Kong helped him with his stress indoors. The Kong was also was the only type of toy he wouldn’t rip apart. He has been adopted and he went home with a nice new Kong toy.