canine dog dogs ice icy imprint paw paws print slush snow white winter cast cretaceous-period dinosaur dinosaur-tracks embedded footprint geological geology hard impressed impression imprinted mark palaeontology paw-print prehistoric rock sharp solid toes animal beach feet footprints natural nature pawprints prints sand sandy shore activity animals colors colours evidence grainy impressions imprints indented light patterns paw-prints shadow textures tracks park pedestrians Soil vehicle-tracks vehicles walkers claws clear distinct marked shadows surface surfaces background backgrounds cat cats footprints catwalk cold copy space Foot print Footmark frost frosty frozen pad pastel path pet shape shapes track trail walk active aged aging alone beachcomber black brown collar colorful colourful companion cool curious Ears edge eyes face features friendly fun fur furry graying greying intelligent man’s best friend mottled nose old paw prints ripples seashore seaweed texture tongue walking water water’s edge wavelets waves wet