noun
cat flea
Refers specifically to the cat flea (Ctenocephalides felis), a common external parasite of cats.
ネコノミは猫だけでなく人も刺すことがある。
Cat fleas can bite not only cats but also humans.
蚤 is the general term for flea, while ネコノミ specifies the cat flea species.
Compound of 猫 (neko, 'cat') and 蚤 (nomi, 'flea').