Need Help Finding A DS Game

I had this horse game when I was real little, sometime in the late 2000s, early 2010s. All I remember is, it's about horses, and you can wash them. When you did wash them, the soap bubbles were pink and looked fluffy. The soap always showed up in chunks, and rinsed off in the same chunks. I can't seem to find anything on it, so it would be awesome if anyone remembers what I'm talking about!