#178912 - It was only made worse when they were in swimsuits and in close proximity to or actually in the river as it seemed to trigger something in them, she surmised it must be part of their training as guard dogs. The next slow swipe started at her tight anus and went directly up the center of her now openly parted swollen labial folds, then across her exposed protruding clit causing a uncontrolled tremor to run through her body from the erotic sensations. Their repeated thrusts at attempted penetration combined with their oiled bodies had soon rolled their loose bikini bottoms down which also helped in keeping them tripped up, keeping their legs tangled, increasing the difficulty of trying to rise/standup on the grassy slope with over two hundred pounds of dog on each back.