Ah, that picture looks familiar, although ours was chewed just enough to create a slow leak when I opened the tanks. I chalked up the damage on ours to chipmunks but it could just have easily been squirrels.
When I discovered our leak we were at a campground about 25-30 miles from any sizeable town. Luckily there was an old-time auto repair shop at the crossroads about 7 miles away and they were able to put a barbed union in the hose so it would last through the weekend.
I switched to braided stainless steel hoses after that!
John & Cindy
2015 CrossRoads Z-1 208FL