tooth, fang, and claw

figuratively

(figuratively) Viciously; with all one's strength or power; without holding back.

Japanese Meaning

猛烈に、全力で、容赦なく攻撃・行動する様子 / 力の限り、妥協せずに全力を振るう様子 / 激しく、ためらいなく、断固たる態度で臨む様子

They defended the nest with tooth, fang, and claw against all intruders.

彼らはあらゆる侵入者から巣を歯と牙と爪で必死に守った。

Sense（1）

(figuratively) Viciously; with all one's strength or power; without holding back.

to fight tooth, fang, and claw for something

tooth

（ canonical ）

fang

（ canonical ）

and claw

（ canonical ）