lens caps tended to wander about, back in the day.
In the Yosemite, near back country, bears were very adept in hauling down backbacks and very expertly, diagonally slashing external pockets in the dark to liberate tuna fish cans and other sources of nutrients.
Totally fun nights.
In the mid 70s, I was hiking in the Cascades near the old mining town of Holden where my dad mined copper in the late 40s to pay for college. I met a fellow hiker and we decided to head over to an alpine lake. He had a big backpack since he was going to be out for a week or so, but I only had a small daypack. He left his backpack with all his grub near the mine and we headed out to the lake.
When we got back a couple hours later, his backpack was FULL of chipmunks chowing down on all of his food. It was like a Disney cartoon with all those silly chipmunks popping up out of his pack and looking around like “Huh? Oh, geez, he’s back! Scatter, guys!” There were chipmunks evacuating that pack like crazy and running all around. I never did find out how he managed the rest of his trip.
Funniest wildlife thing I ever saw!