There are three breeders two in Canada both in Ontario the one I got my dog from a Portuguese man who raises beef cattle http://acorianokennels.com/ and a professional dog trainer http://wellingtonk9.com/ and one in the states http://dreamteamkennels.tripod.com/dreamteam/id19.html and this guy had a litter http://www.gampr.org/Fila.html they all have pictures but no video information is hard to come by you should share what you have found. Carla Cruz has written a few study's on all the Portuguese breeds and this one including the Spanish Mastiff, Rottweiler, Great Pyrenees, and Hungarian Pulli. This is a good read they are finding differences between kennel bred dogs vs aboriginal dogs in all breeds which makes sense breeding for form not function and breeding their own lines this is it. LIVESTOCK GUARDING AND HERDING DOG BREEDS FROM PORTUGAL MORPHOLOGICAL RELATIONSHIPS BASED ON BREED STANDARDS AND ON BIOMETRIC DATA http://www.alpetratinia.net/consulting/downloads_en.htm The first one is a one page poster down lower under publications is the 14 page report. on the downloads page their are many more studies half are in English. My dog has been great just a couple of months of biting pants and whatever else was moving when she was young but learned to leave the kids alone very quickly and has been great with them and us,you just have to teach them manners at a young age. Some of my females videos visitors passing by our lake lot http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=VisitersSNC00106.flv and my front yard which she has stayed in on her own since she was a pup and never tied up at the lake either http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=SNC00111Micameetsonstreet1.flv far recall http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=SNC00447Longrecall50s.flv recall with dogs http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=SNC00033dogfieldrecall.flv First human retrieval http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=firsthumanretiveSNC00207.flv Retrieving Me http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=SNC00232retivingMe.flv Suspension bridge http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=SNC00791firsttimesuspentionbridge.flv The dog park http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=dogparkpupsSNC00161.flv the remote stop command while pulling http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=SNC00244pullingstop.flv pulling water up hill till I lose it all http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=SNC00246pullinguphill.flv Dunking her face In water http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=SNC00001waterdunk.flv Riding on a box while driving http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=SNC00120drivingonabox.flv walking on Ice logs http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=100_3425Micawalkingonfrozenlogsagai.flv running in the snow http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=100_4083Micasnowbunny2009-01-17.flv running in water http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=SNC00042runninginwater.flv retrieving with my daughters 3 & 6 http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=100_4000.flv Watching the hotel parking lot quietly http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=SNC00269watching.flv and finally walking on water http://s497.photobucket.com/albums/rr334/CarlosP1122/?action=view&current=100_3686MicaWalkigonwater.flv