A long time ago I had a character called Mikki Moo. I also owned a character called Mimu.

I don't have those characters anymore, but while designing this character, those names seemed to fit.
Mimu grew up on a dairy farm after her egg was snatched. (Fortunately, the snatcher was attacked by the farmers dog, and dropped the egg)

Since she grew up on a farm and not with other dragons, she wasn't able to eat the proper nutrients while growing up, and as a result her growth was stunted.
Her adoptive mother is a dairy cow named Daisy, who lost her calf to a previous dragon attack. This is why Mimu has the markings of a cow, she is a product of her environment.