101Leafy researched the games.
Rathalos

Male wyvern that keeps a nest and patrols its patch of territory from the air in search of prey. Its claws are filled with a poison that weakens its quarry.
Monster List No. 14

Carving
Number of carvings: 4 (2 per area) (BradyGames, Monster Hunter Official Strategy Guide, 2004, p. 83). The guide (p. 78) splits the carves by Quest Level: early quests are levels 1 to 3, latter quests 4 to 6.
Early quests, Body
| Item | Chance |
|---|---|
| Rathalos Shell | 5% |
| Rathalos Webbing | 30% |
| Rathalos Scale | 30% |
| Rathalos Shell | 25% |
| Flame Sac | 8% |
| Wyvern Marrow | 2% |
Early quests, Tail
| Item | Chance |
|---|---|
| Rathalos Scale | 5% |
| Rathalos Tail | 30% |
| Rathalos Scale | 30% |
| Rathalos Shell | 25% |
| Rathalos Tail | 8% |
| Wyvern Marrow | 2% |
Latter quests, Body
| Item | Chance |
|---|---|
| Rathalos Scale | 5% |
| Rathalos Webbing | 30% |
| Rathalos Shell | 30% |
| Flame Sac | 25% |
| Wyvern Marrow | 8% |
| Rathalos Wing | 2% |
Latter quests, Tail
| Item | Chance |
|---|---|
| Rathalos Plate | 1% |
| Rathalos Tail | 30% |
| Rathalos Shell | 30% |
| Rathalos Tail | 25% |
| Rathalos Scale | 8% |
| Wyvern Marrow | 6% |