Lisa Wilson filed suit yesterday in Brooklyn Federal Court, alleging that Floyd -- a guard dog -- "lunged" at her when she walked past him during the 2006 flight, making her go ass-over-elbow and giving her such debilitating back pain that she had to have serious surgery.
Wilson claims that J. Lo knew the dog had "vicious propensities" and should've controlled it. J. Lo's peeps had no immediate comment.