101Leafy researched the games.
White Cat Stamp

Hammer made to resemble the head of a Felyne. A popular weapon with Felyne fans.
| Class | Hammer |
|---|---|
| Rarity | 2 |
| Attack | 520 |
| Paralysis | 200 |
| Slots | 0 |
| Price | 2,150z |
Upgrades
| Upgrades into | White Cat Hammer, Black Cat Stamp, Teddybear |
|---|
Upgrade tree from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 726.
Materials
Pawprint Stamp ×1, FlynMealPassReg ×1, Paralysis Sac ×2