Cats are always up to no good, and they're always getting caught in the act. Luckily, it's easy to read the signs when they're lying to you.
Rapid fluctuations in pupil size.
They may lick their lips a lot.
A lying cat may attempt to avoid you altogether.
If they're pretending to play dead:
They might feign incredulousness.
They may be compelled to return to the scene of their crime.
They may overzealously deny.
They may accuse someone else.
Pay close attention to their ear language.
They may attempt to distract you.
They may try to make a quick exit to avoid the conversation.
They might not even try lying, because let's face it: They're not even sorry.
