my boss uses old tractor tires and springs to make self feeding cattle troughs. he runs a pipe up the middle that sticks just below the top and when water hits that level the water flows into the pipe and is swept away so that the cows don't make mud holes.
a few years back he had a black bear that liked to take baths in his troughs but hated those pipes pokin' him in the hind end and actually learned how to unscrew them. on more than one ocassion my boss went out and found empty troughs with the pipes laying nearby and fresh bear tracks around...
I agree with your assessment, sometimes they are just pests.
ignore my complete lack of capitalization. I still have no problem correcting your grammar.
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