Haha yeah, it's a tatoo. Normally they only use a small chip, but sometimes they do tatoos. This was made by his previous owners but should he ever run away (which is highly unlikely since he's an indoor cat) it'll be used to identify him and thous easier to identify us as his owners.
I don't know. She's been missing for a couple of weeks...and my dad said he found a bowl in the yard that had a little cat food in it and it smelled wierd...like a kind of poison. And its not like her to just run away and never come back. So...we believe she has passed away somewhere in the woods...*tears well up in eyes*