Astronomy Picture of the Day Calendar (nasa.gov)

IKR

Friday cat CVI

Friday cat CV

As Juvat would say,

"So, there I was..."

Friday cat CIV

The cat in the above picture was, obviously, not observed when the above statistics were gathered.
He sleeps 12 - 16 hours indoors, then goes outside and sleeps another 12 - 16 hours daily*
As for his mass, he was upwards of 9 lbs before he was a year old.
Currently he is somewhere north of 12 lbs.

*may be a slight exaggeration

Friday cat CIII

Friday cat CII

source