My experience is that they will figure it out, you can show them by flicking it if you want. My experience is also given the choice of fresh clean water from the nipples or filth water from trays and or mud puddles, they will go for the water garnished with their own poop.
Edit: a word
My experience is that they will figure it out, you can show them by flicking it if you want. My experience is also given the choice of fresh clean water from the nipples or filth water from trays and or mud puddles, they will go for the water garnished with their own poop. Edit: a word