fighting like cats and dogs

Feuding without pause

Fighting like cats and dogs describes constant, vigorous quarreling—the kind of persistent bickering associated with siblings or longtime couples: My parents have been fighting like cats and dogs for forty years.

The image comes from the supposed natural enmity between the two animals, though actual cats and dogs often coexist peacefully.

Related

at each other's throats · friction · oil and water · feud · family feud · clash · loggerheads · quarrel · bad blood · rivalry · strife · discord · animosity · incompatibility · disharmony · disagreement · brawl · squabbling

Opposites
interpersonal harmony

fighting like cats and dogsthick as thieves

Intimately allied and loyal

two peas in a pod · bosom buddies · inseparable · harmonious · amicable

cooperation vs conflict

fighting like cats and dogsjoined at the hip

Extremely close, always together

hand in hand · cooperating · collaborating · united · pulling together

behavioral interaction

fighting like cats and dogspeaceful coexistence

Non-hostile international relations

in accord · at peace · copacetic · smooth sailing · seeing eye to eye

Family

fights, fighter, fighters, fighting, likeness, unlike, unlikely, likeliest, likelihood

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Negative · Everyday, not technical · Rated G