You said: "gets bored and needs mental stimulation."
Here's what we'd get
Other options that fit too
Fish-Shaped Dog Treat Dispenser Toy-Food-Grade Silicone Slow Feeder For Boredom Relief, Self-Entertainment & Pet Interaction - Durable Chew Toy With Treat Leakage Design, Teeth Cleaning Surface
$22.99
Lick Mat For Dogs And Cats Dog Slow Feeder Mat With Strong Suction
$23.99
Dog Puzzle Toys, Interactive Treat Puzzle Dog Enrichment Toys For Large Medium Small Dogs
$33.99
Not quite right? Start over