Watch like a hawk – Vigilar
A big fish in a small pond – Persona prepotente
The lion’s share – La major parte
Until the cows come home – hasta muy tarde
Ants in his pants – inquieto
it’s like shooting fish in a barrell – algo muy facil
chicken out –
Killing two birds with one stone – mata dos pajaros con un tiro
the cat that got the cream = muy feliz/or con uno mismo
escape the rat race – escapar el mundo coroprativo
like a bull in a china shop – como un elefante en una cacherreria
bug going around –
dropping like flies –
at a snail’s pace – mover muy lentamente
hold your horses – Tranquilo!
Shut the stable door after the horse has bolted – un accion que podria haber funcionado, pero hecho demasiado tarde
Put the cart before the horse –
Catnap
having a whale of a time
flog a dead horse
a game of cat and mouse
call your dogs off
dog tired
like a cat on a hot tin roof
catcall –
catfight – una pelea entre dos mujeres
crocodile tears
dogeared
the dog’s bollocks (The mutt’s nuts)
a dogs breakfast
doggy bag – food taken home from a restaurant.
a dogsbody
fatcat – a rich person
a bit fishy – suspicious or strange
holy cow – A expression of surprise
hair of the dog (that bit you) – to drink alcohol in order to cure a hangover
a little bird told me
keep the wolves from the door /at bay
a dog’s life
let the cat out of the bag
like herding cats
monkey see, monkey do – to copy someone
more than one way to skin a cat
sleep with the fishes – dead (usually murdered)
while the cat’s away, the mice will play
Useful link: https://eslexpat.com/english-idioms-and-phrases/animal-idioms/