Chipmunks are often caught by cats or dogs, or they may survive being hit by a car. These animals need to be rescued.
IF IT IS DETERMINED THE ANIMAL NEEDS ASSISTANCE THEN:
Pick up the animal gently with gloves on, or use a thick soft cloth.
Place animal in a small box with soft cloth on the bottom. Secure lid and create ventilation.
Warming the animal is very important - click here for How to Warm.
Place the box in a quiet, dark room. DO NOT give food or water.
It is very important to cover the box containing the chipmunk, and keep it in a quiet place until you can transport it to a licensed rehabilitator or a veterinarian. It is very stressful for chipmunks to be in captivity and they can chew through cardboard. Transport them as quickly and quietly as possible for a successful rescue.