https://en.m.wikipedia.org/wiki/Moon_rabbit
"The Moon rabbit was mentioned in this conversation between Houston and the Apollo 11 crew just before the first Moon landing in 1969:[7]
Houston: Among the large headlines concerning Apollo this morning, is one asking that you watch for a lovely girl with a big rabbit. An ancient legend says a beautiful Chinese girl called Chang-O has been living there for 4,000 years. It seems she was banished to the Moon because she stole the pill of immortality from her husband. You might also look for her companion, a large Chinese rabbit, who is easy to spot since he is always standing on his hind feet in the shade of a cinnamon tree. The name of the rabbit is not reported.
Michael Collins: Okay. We'll keep a close eye out for the bunny girl.[note 1]"
"The moon rabbit in folklore is a rabbit that lives on the Moon, based on pareidolia that identifies the markings of the Moon as a rabbit. The folklore originated in China, and then spread to other Asian cultures.[1] In East Asian folklore, it is seen pounding with a mortar and pestle, but the contents of the mortar differ among Chinese, Japanese, and Korean folklore. In Chinese folklore, it is often portrayed as a companion of the Moon goddess Chang'e, constantly pounding the elixir of life for her; but in Japanese and Korean versions, it is pounding the ingredients for rice cake. In some Chinese versions, the rabbit pounds medicine for the mortals."