if memory serves me correctly, there is a story about the Chofetz Chaim where he was traveling and in the wagon in which he was traveling there was a horse or cattle dealer (someone can fix the details – I do not remember all the details) and this merchant spent the trip talking about his trade. when they arrived at where they were going, and the merchant found out who he was talking to, he begged forgiveness for bothering the Chofetz Chaim with the nitty gritty details about horses or cattle. the Chofetz Chaim said it was a most pleasurable trip because there was no Lashon Hara.
so… why am I writing this? because if you go to: Feivels Wonders of Creation –
http://www.theyeshivaworld.com/coffeeroom/forum/feivels-wacky-stuff
you can learn all about:
insects
birds
crustaceans
…
and most importantly, hopefully, NO Lashon Hara!