To provide an implement for rearing an animal, having ready handleability and an inexpensive manufacturing cost even while surely preventing penetration of polluted air into a rearing container.

A ceiling part 2(1c) of a container storage part 3 is provided with an intake port 8 for blowing clean air A for ventilation from above in the inside of a top open type rearing container 4 housed in the container storage part 3. A structure for making a space between a top opening part 4a of the rearing container 4 and the ceiling part 2(1c) of the container storage part 3 become a closed space X opening only forward with the storing operation of the rearing container 4 from a front opening part 3a of the container storage part 3 to the container storage part 3 is formed.