In the never ending quest for food dispensing toys I tried this. He loves it but it is very easy to get the kibble out, so thumbs up for fun quotient but not for time consumption It is very easy to load because the bottom screws off.
Its quite large and the bottom is weighted so once the dog gets it moving it will crash into its surroundings with some gusto (or may be that is just the beast). He can pick it up and move it around too but I would think smaller dogs won't be able to do that.
Over all a nice toy but not a huge time consumer