cat got (someone's) tongue

Translations
кот съел (чей-то) язык
When asked about his opinion, Mark remained silent. It seemed like the cat got his tongue.
Когда его спросили мнение, Марк остался молчаливым. Казалось, кот съел его язык.
Definitions
This phrase is used to ask someone why they are being unusually quiet or not speaking, often when they are expected to say something. It suggests surprise at their silence.
Words
cat

noun
кошка
got

verb
забрала
someone

pronoun
кого-то
s
чей-то
tongue

noun
язык