When your doe is in heat, she will begin to “wag” her tail back and forth. All of the above are the common signs you’ll see in females during the estrous cycle. But if she … A doe in heat usually wags her tail, like a dog, a behavior known as flagging. This is the main sign that I look for. Another sign is that a goat will either assert dominance by mounting or assume submission by being mounted. The doe wags her tail. Your bucks and bucklings behavior can be an indicator that a female is in heat. They typically will pee on their own face. … It is very obvious and you will recognize it as soon as … The TAIL-WAG. Discharge.