There are lots of treat dispensing toys out there. Some of them are too big for my Scottie and Casie. I found these two to be pretty good and keeps them well-entertained:
https://www.amazon.com/PetSafe-Buddy.../dp/B0002I0RTY (the small size)
https://store.intl.petsafe.net/en-ca...-twist-n-treat
When they used to eat too fast, I fed their meals in these. And then I used them for a while when training them out of separation anxiety (I'd leave these with them when I left - and badda-bing - no barking when I leave home). But now, I just use them with some healthy treats when they're bored and 'need something to do'.
Casie also loves her Kong:
https://www.petsmart.com/dog/toys/in...g-5164381.html . Some people like to fill it with peanut butter, which works well for this purpose. But I find it too hard to clean
