![Pet Supplies : Pet Toy Balls : Marshall Pet Products Ferret Pop-N-Play Ball Pit, All Breed Sizes : Amazon.com Pet Supplies : Pet Toy Balls : Marshall Pet Products Ferret Pop-N-Play Ball Pit, All Breed Sizes : Amazon.com](https://m.media-amazon.com/images/I/51qeUKuFRPL._AC_.jpg)
Pet Supplies : Pet Toy Balls : Marshall Pet Products Ferret Pop-N-Play Ball Pit, All Breed Sizes : Amazon.com
![Raz 🐉 @Razswirl on bluesky & threads on Twitter: "STOP what you're doing and enjoy these ferrets playing in a ball pit ✨ https://t.co/o9c6ZQ86xQ" / Twitter Raz 🐉 @Razswirl on bluesky & threads on Twitter: "STOP what you're doing and enjoy these ferrets playing in a ball pit ✨ https://t.co/o9c6ZQ86xQ" / Twitter](https://pbs.twimg.com/media/EOQVd7PUEAAQJgA.jpg)
Raz 🐉 @Razswirl on bluesky & threads on Twitter: "STOP what you're doing and enjoy these ferrets playing in a ball pit ✨ https://t.co/o9c6ZQ86xQ" / Twitter
![The use of ball pits and playpens in laboratory Lister Hooded male rats induces ultrasonic vocalisations indicating a more positive affective state and can reduce the welfare impacts of aversive procedures - The use of ball pits and playpens in laboratory Lister Hooded male rats induces ultrasonic vocalisations indicating a more positive affective state and can reduce the welfare impacts of aversive procedures -](https://journals.sagepub.com/cms/10.1177/00236772211065920/asset/images/large/10.1177_00236772211065920-fig1.jpeg)