This verse of Rigveda mentions a class of beings called Yatudhanas:
- I balm with oil the mighty Rakṣas-slayer; to the most famous Friend I come for shelter Enkindled, sharpened by our rites, may Agni protect us in the day and night from evil. 2 O Jātavedas with the teeth of iron, enkindled with thy flame attack the demons. Seize with thy tongue the foolish gods' adorers: rend, put within thy mouth the raw-flesh caters. 3 Apply thy teeth, the upper and the lower, thou who hast both, enkindled and destroying. Roam also in the air, O King, around us, and with thy jaws assail the wicked spirits. 4 Bending thy shafts through sacrifices, Agni, whetting their points with song as if with whetstones, Pierce to the heart therewith the Yātudhānas, and break their arms uplifed to attack thee. 5 Pierce through the Yātudhāna's skin, O Agni; let the destroying dart with fire consume him. Rend his joints, Jātavedas, let the cater of flesh, flesh-seeking, track his mangled body.
There are similar other verses that point to these demons being a class of Rakshasas that may be especially susceptible to fire. From the above verse we can also surmise that they eat flesh and fly in the air but I haven't come across any specific Yatudhana story.
So my question is - Who are these demonic beings & are there any stories related to them in any other scriptures?