Anecdotal historical accounts report that flat - headed cats are nocturnal .
An adult captive female was crepuscular and most active between 8 : 00 and 11 : 30 and between 18 : 00 and 22 : 00 hours .
Anecdotal historical accounts report that flat - headed cats are nocturnal , but an adult captive female was crepuscular and most active between 8 : 00 and 11 : 30 and between 18 : 00 and 22 : 00 hours .