Cats may be animals, but so many centuries of serving as domesticated pets has spoiled them. Cats today have become much more sensitive to the wild than the rest of the animal kingdom. Fleas, ticks, and other critters can quickly and quietly become a serious problem if your cat is outside often.
https://www.tdm.vn/thong-tin/binh-may-nuoc-nong-stiebel-eltron-la-cua-nuoc-nao-co-tot-khong/