Interestingly, however, cocaine caused mice to move more around the perimeter of test chambers rather than crossing into the brightly lit center of the chamber like normal animals do on the drug. (sciencedaily.com)
If this behavior happens out in a free - range environment with intact cats, or if we see it on a nature program, it's something we understand as normal animal behavior. (catbehaviorassociates.com)
They survived to reproduce and averaged the same litter sizes as normal animals. (sciencedaily.com)