Be at each other’s throats
Definition 1 of 1
Pro Tip 1/3Metaphorical Use
This phrase is used metaphorically and does not involve physical violence but intense disagreement or conflict. 
Whenever politics is discussed, my friends are at each other's throats.
Pro Tip 2/3Negative Emotion
This idiom expresses a strong and hostile negativity between people; it suggests extreme antagonism. 
The two politicians were at each other's throats during the debate.
Pro Tip 3/3Colloquial Expression
It's a casual expression and may not be suitable for formal or professional contexts. 
I wouldn't say those two colleagues are at each other's throats in front of our boss.