dog=someone bad animal (the word)=someone bad the same goes for pig and donkey

and also, “nerd” and “cow” are homophones.

(Turkish 🇹🇷)

In Vietnamese I think a lot of it is metaphorical and used to convey personality traits or situations.

For example “mập như con heo” means fat like a pig. Or “ngu như bò” means stupid like a cow.

slangs

Nota bene: ‘slang’, like ‘mail’ and ‘e-mail’ and other ‘mass’ nouns, doesn’t get an ‘s’ when talking about groups of more than one.

“Chatte” (female cat) is the equivalent of pussy in english.

“Poulet” (chicken) is a cop. “Poulette” (hen) is a rather disrespectful word for a women.

“Gorille” (gorilla) is a tall muscular person.

“Cochon” (pig) is someone filthy, especially in the sexual sense. (can be used as an adjective, “films cochons” are porn films).

“Canard” (duck) can be a newspaper, or a mistake when playing music.

“Levrette” (female greyhound) is the name for the doggy style sexual position.

“Vache” (cow) can be either someone mean, either a cop. The second case is rarely used except in the sentence “Mort aux vaches” (death to the cops) and probably comes from the Wache germanic root for Guardian, rather than the actual animal.

In english that’s a “fox”

In USA pigs = police

As a lusophone (of the Brazilian variety), it’s weird that “cão” (dog) can refer either to a dog or to the devil (???).

Or how “veado” (deer) can mean “deer” the animal, a gay person (pejoratively) or “dude” in slang (depends on the region and on the speaker’s vocabulary).

In Russian there are many slang words with similar meaning to English.

“Змея” is snake. Same meanings with animal and someone who is deceiving or treacherous

“Киска” is pussy with same meanings

More unique is probably “тёлка” - heifer. A bit derogatory term for young woman. Size does not matter. Kinda similar to English chick

One very specific to Russian is rooster “петух”. It comes from prison slang and means a person from prison untouchable caste. Literally untouchable, because if you touch them you will also become петух. A terrible insult, you may be killed if you say it to a wrong person

“Козел” male goat is another one from prison slang, which means an inmate that works with prison administration. Outside of prison in everyday life is just a very bad insult

In Spanish, gato is not necessarily attractive (though they usually are) but a cheap sex worker or a promiscuous seductress/tor.

Potro (colt) is an attractive young man
Yegua (mare) equivalent to bitch, an asshole woman
Vaca (cow) same as in English, could be used for someone overweight or dumb
Cerdo (pig) same as English, a filthy/fat person

Marmota and burro (marmot and donkey resp.) someone dumb

Vibora, buitre (snake, vulture resp.) toxic person
Sapo, bicho (frog, bug resp.) someone ugly
Mariposa (butterfly) allegedly or suspected to be gay

Those are the first ones to pop into my mind but I’m sure there’s more

Cougar.

It’s either a type of big cat, or an older, attractive, single woman.

In the USA, “cat” can mean just any person, a woman, or vagina (an alternative to the more vulgar term that used to mean cat).

Someone who is a snake can’t be trusted.

Of course the word bitch, a female dog.

Cougar, older women attracted to younger men.

In Italy “uccello” (bird) means penis in a very unformal context, usually used with friends. In Tuscany, for the regional ones, we have “Topa” (female of the mouse) to indicate a very pretty girl, also very unformal and a bit rude. Same translation for “passera” (female of the sparrow). Both can also indicate the literal female reproductive organe. “Gatta morta” (dead female cat) means somebody who acts ingenous or hide her personality under a chill, almost naif mask to act at the opportune moment.

A chicken hawk is an older gay man who pursuits younger men.