7 month old female pup on usual walk this morning. She suddenly starting whining, tail between legs, ears back, kind of crouching and trying to get very near to me. Seemed like either fear or pain. No obvious triggers, had been sniffing things just prior. Not aware of anything having scared her then or previously. Back home and seems ok now if a bit clingy. I will keep and eye on her obviously. Could it be her coming into season?