犬は攻撃されなければめったにかまないものだ。

A dog seldom bites unless it is attacked.

犬(いぬ)は攻撃(こうげき)されなければめったにかまないものだ。

Inu wa kōgekisarenakereba mettani kamanai mono da.

犬 (いぬ)

dog (Canis (lupus) familiaris); snoop (i.e. a detective, a spy, etc.); loser; asshole; counterfeit; inferior; useless; wasteful

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

攻撃 (こうげき)

attack; strike; offensive; criticism; censure; denunciation; condemnation

滅多に (めったに)

rarely; seldom

擤む (かむ)

to blow (one's nose)

者 (もの、もん)

person

だ (だ)

be; is; indicates past or completed action; indicates light imperative

Readings: ケン、いぬ、いぬ-

Meaning: dog

Readings: コウ、せ.める

Meanings: aggression, attack, criticize, polish

Readings: ゲキ、う.つ

Meanings: beat, attack, defeat, conquer