Our neighbours have two guinea pigs kept outside in a hutch. Last year I had to go an have a word with them (very politely - "I'm a bit worried" etc...) as it got to the end of November and they were still outside with no cover on the hutch. A few days later they moved the guineas inside but didn't speak to me for the whole winter.
This year unfortunately, the guinea pigs are still outside with no cover on. It's only 3 degrees and rain is bucketing down. Should I interfere again?