From the manufacturer:

Our Snuffle Ball nosework toys are a unique twist on the snuffle mat! Shaped like a ball, dogs can enjoy rolling it around or playing fetch with it as well as searching for treats within them. Perfect for keeping your dog occupied and engaged, while learning how to effectively use their nose and getting rewarded with tasty treats along the way!

*NOTE: Please use this toy for nosework and treat foraging only. Once treats have been found, remove toy to preserve longevity of toy.

Difficulty Level: Beginner

Other Benefits:

• Keeps your dog busy and occupied
  
• Encourages stimulation of all their senses
  
• Can help to relieve separation anxiety
• Interactive and fun
  
• Improves your dog's cognition
  

 Hide treats within the layers of the toy.

Small is roughly 4"

Large is roughly 6"