Translation

The Japanese word for "Hamster" is hamusutā ハムスター, a katakanization.
Another word for "Hamster" is kinuge-nezumi キヌゲネズミ.

Romaji ha mu su taa
Katakana
Hiragana
Romaji ki nu ge ne zu mi
Hiragana
Katakana
Kanji
Meaning Silk Fur Rat
School Level 小6 小2

Further Reading

Wikipedia: Hamster (ハムスター)