brian abel reports. 3 (nat sound)(lisa vanvalkenburgh, maverick's owner)"he's got a really strong will to live." apparently so - maverick is already a survivor after a car hit him and he walked into a raccoon trap before lisa van- valkenburg turned foster housing into a forever home for the german shepherd. forever was almost cut short thursday night when maverick pushed past his invisible fence following a bathroom break.(lisa vanvalkenburgh, maverick's owner)"we have some small lakes where we live so they searched to see if maybe there was any holes in the ice."turns out maverick found a sinkhole instead -- (lisa vanvalkenburgh, maverick's owner)"i heard this very faint almost like a bark but out of breath bark."there he was after three days of searching. maverick had slid headfirst about 5 feet down - and another 5 feet sideways.van- valkenburg's family tried to get him out themselves but feared the ground around the kill the fragile k-9 - so they called reinforcements.(lisa vanvalkenburgh, maverick's owner)"those firemen did not think twice."platte county firefighters and sheriff's