I guess "snuffle mats" are a thing. Who knew?
From The Whole Dog Journal:
5 Best Snuffle Mats for Dogs
Dogs are natural foragers. They have instincts to hunt, sniff, and consume. While we probably don’t want our dogs to be hunting and eating things outside, the best snuffle mats can give your dog a good outlet to practice this instinctual behavior.
Snuffle mats are typically made with lots of long pieces of fabric attached to a base or mat to create a grass-like toy for your dog to sniff through and find food in. Some snuffle mats aren’t simply long pieces of fabric, they may also include different shaped treat compartments and additional built-in enrichment toys for an added challenge.
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