Anything is possible-- If the mice ate at your ignition system- Then I would say YES that is a possibility
A broken engine mount would cause a jerking- but not a no start-- a timing belt would cause this=== are they saying the timing belt is broken as well as wires eaten by mice?
also what was flooded?
OK-- I understand now-- by flooded- they mean the spark plugs have raw gas on them-- this will keep the car from starting... The jerking - I think is from the engine mount.. As far as the wiring I believe the dealer-- this happens quite often here in PA with squirrels...