a search for cactus toy on taobao returns many sellers of the same product (for as cheap as 5USD). Looks like it's quite popular in China.
One seller from beijing even uses the same Polish song in its ads:
https://detail.tmall.com/item.htm?id=637694403248&ali_refid=...
And in the cactus playlist there goes a song titled "Dancing Polish Cow" =)
https://img.alicdn.com/imgextra/i1/2207287191893/O1CN01ve29V...