Very, very vague but it's about esentially a hole in the ozone layer that causes a very rapid increase in global warming causing animals everywhere to go insane. There were whales washing up ashore by the dozens and birds going crazy and attacking everything and everyone.
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Artic Blast maybe
disastermovieworld.com/.../
Actually it wasn't Arctic Blast. But there was a link to the movie in that article lol. Countdown: The Sky's on Fire. So thanks! Haha, it's one of the worst feelings when you vaguely remember a movie but can't recall enough of it to properly Google it.