#4 Russian Blue

Russian blues are affectionate, devoted cats with short, silky blue coats and big, brilliant-green eyes. Excepting lunchtime, Russian blues are generally quiet. 

These cats are faithful and kind to their family, yet they might be reserved around strangers. Russian blues are also highly intelligent. Sometimes they can predict your thoughts before you ever have them. As a result, they are wary and cautious, always seeking to make sure that visitors are not a threat.

The health of the Russian Blue is generally quite good. It is believed that the breed did not develop through selective breeding but rather organically. They benefit genetically from this, although they are still susceptible to cat-specific diseases.