Valmiki Ramayana Sundara Kanda Sarga 53 Shloka 9

तस्य हनूमतः of that Hanuman, सम्प्रदीप्तम् burning, लाङ्गूलम् tail, द्रष्टुम् to see, निशाचराः the demons, प्रीताः joyfully, सहस्त्रीबालवृद्धाश्च including children, women and the old, जग्मुः went out to see.

All the demons including the shedemons and their children and the elders went out joyfully to see the burning tail of Hanuman.