I know this isn't keeping with the "awww" sentiment of this section, but I hate it when people keep exotic pets to make themselves seem cool. I've been around snakes and such. They entertain you for about 5 minutes, then spend the next 23 hours in a 3 foot glass box.
I guess I'd break those rules for this:
(who am I kidding? It's a giant hamster)
I can't embed this, apparently, but here is the link:
Top 10 Deadly Attacks From Exotic Pets - Oddee.com
And a bullmastiff is NOT an exotic pet. They're quite cute if raised correctly.