Have you ever wondered why rats are always being used in laboratory experiments? Yes, rats are not only highly intelligent animals, but they also have great memories too. Rats are able to map out a room and will remember all of the routes to get around f

15 10

25 40

8 40

31 40

67 45

38 40

18 10

12 20

13 10

5 0

13 41

27 20

37 20

33 44

27 20

24 43