I am while I cycle.
I have one insect left in my bug encyclopedia: the house centipede. They're available in August.
I have three fish left and six diving creatures left as well. I'm aiming to complete the encyclopedias while I so my 16 cycles for Stitches, taking me to November.
I've had the game for a year now so while I've technically had the chance to catch everything, I hadn't been too bothered with the encyclopedia until recently haha. I have 3 insects, 7 fish, and 1 seafood to go -- according to the document I've written out for myself the soonest I can complete it is December >.> (I really want to do it legit without TTing or visiting a TT town)
I completed it when the Giant Spider Crab became available. It's very satisfying when you go into your museum and it's all full c: Especially when you talk to your villagers and they tell you how awesome the museum has become.
I've had my file for almost a year (started on July 12th, 2013) and I have one bug, one underwater creature and four fish left to catch. I could have had them all by now, but I didn't make a big deal of collecting everything originally so I'm missing a couple from Summer and a couple of fish from September.
I only need the house centipede, then I'm 100% done, and all but my art exhibit is done. I've had my town since launch, I somehow missed it last year (though its around for 3 months...)
Ironically, we get really big ones in my house irl ._. I hate that I'm excited to catch one in game in August... so far away.
I fully completed my encyclopedia a few weeks ago! I've had the game for about a year. The last creatures I need to catch were the house centipede (ugly looking things lol) and the Arowana.
I recently reset my town so I'm not even close, but getting there. I think I'm about to get a bronze badge for fishing but I always finish that category the fastest.