Jessica Biel Unleashes the Hound

7/9/2009 1:12 PM PDT BY TMZ STAFF
Can you spot what's missing in this picture? How about the leash around Jessica Biel's pit bull, Tina!

Jessica Biel
Though Jess held tight to Justin Timberlake's two boxers as she left Runyon Canyon yesterday, a third leash for her own pooch was mysteriously absent.

According to Pit Bull Rescue Central, the stakes are "always higher" with this kind of dog, and "while they may not instigate a fight, they won't back down from a challenge."

Ruff Stars