Answer: They hold stopwatches AKA answer A
Explanation: Humans test rats and mice for intelligence they see how long it takes them to get out of the maze to get the food waiting on the other end because rats are equally smart when compared to dogs. Just like dogs, they can be taught to fetch objects, litter trained and can recognize their name and their owners. And just like dogs, they are very social and like to spend time with their owners and rat partners.
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