Noche de perro / de tiburones

[emilwest]

Hola mis cuates.

Estoy buscando la definición.

Muchas gracias!

[AngelicaDeAlquezar]

I've heard "tener/pasar una noche de perros", which means to have a bad night.

"Noche de tiburones" is not an idiom. I can only think about observing sharks and their behaviour at night.

Try providing context for all the expressions you're asking about and we might find the right answer for you.