Ex-NFL on FOX star Jillian Barberie lost a chunk of her lip this weekend -- when she was bit in the mouth by a Cocker Spaniel ... and needed 10 stitches to close the gash.
It all went down Saturday night ... Barberie -- a big time dog lover -- was playing with her friend's pooch ... when it snapped and chewed down on her face.
"Already healing nicely," Barberie said .