This is the most common and direct meaning, referring to a domesticated animal often kept as a pet or for work.

This meaning refers to someone who betrays others by disclosing information, often in a negative or underhanded context.

This derogatory usage applies to a person considered worthless or disappointing, often used in a casual or insulting manner.

This meaning conveys a sense of something being fake or not meeting standards, often associated with poor quality or ineffective.