fight like cats and dogs
US /faɪt laɪk kæts ænd dɔɡz/
UK /faɪt laɪk kæts ænd dɔɡz/
1.
to argue or fight fiercely and constantly with someone
:
•
My siblings always fight like cats and dogs over the smallest things.
•
The neighbors fight like cats and dogs, so we often hear their arguments.