i have a 2 y/o buck that has runny yellow poop. he was wormed with safe guard last month and just treated for cocci last week with sulmet. he is eating a drinking fine. i did see him eat a chicken egg the other day. i thought that was very odd. i was gathering eggs and he was sniffing them and i didn't think he would eat one but then he bit into one and ate it. the only other thing i can think of is that i gave him a billy block from TSC the other day and he licks on that alot. and his coat feels rough. what could be wrong with him?