Hey fellow bunny owner, this hasn't happened to my fuzzball, but I've heard of it happening to lots of others. I think fixing will help.
Has there been any change in your house temperature or in the amount of time you spend with her?
My guy gets really irritable and huffs at me when it's too hot or when I don't squish him enough. Our heat just went on like crazy in the building and I think he's been freaked out by all the temp changes.
Just something to look into.

But yeah, sometimes a horny bunny is an annoying bunny, and getting her fixed can help with that.

I dunno about bunnies, but I discussed with my Vet regarding getting Silver fixed at 6 months, but he said to just wait, and not be in a hurry. He said I'd know when the right time would be. Sure enough Silver started figuring out how to open the gate to get out of the back yard. I sat down with Silver and had a long talk with him, and went and had him fixed. Overnight his behavior changed, and he hasn't tried to get out since.

Oh, and for Silver, this started happening at around a year old.

Bitey's dad here. Temp changes aren't a big issue, because our house is rather cold. As I understand it, heat causes problems for bunnies, but not cooler temperatures, since they can thrive outdoors in colder climates than the northwest, where we live. Another puzzling datapoint is that Alice hasn't tried to bite me, despite her bitchy behavior to her mom, sakura. Perhaps I just haven't tempted her with enough delicious vulnerable exposed flesh...

Also, when I put a pair of shoes on today, I found rabbit pellets in them! WTF?!?!

Uh Oh, i think someone's taken a shine to Piiiiiiee!

You are definitely describing bunny puberty. We had a cute little dwarf boy who just got grumpy and forgot how to use his litter box virtually overnight. Once he was fixed, everything changed back. Bunnies use their poo to mark their territory so you will always find a perimeter of poops around their important stuff. Litter box, food, that kind of thing.

And yes, you are doing the exactly the right thing from a cancer standpoint. And (if I can nag a bit) would you make sure that their living area doesn't have any pine or cedar chips. Something about the vapors from the wood can make them really sick. The recycled paper stuff.. er.. Carefresh.. has worked really well for us.

A bunny trivia note: their ears are a heat sink. When a bunny is hot, their ears move more blood to cool them. Pretty neat.

When I put a pair of shoes on today..

My *all time favorite* Red Dwarf moment is when Cat steps out of a closet, wipes his feet a bit, and says to himself in a self-satisfied manner "He won't find that one -- not until he changes his boots!"

We actually compost all of her litter, so we've been using organic corncob litter as well as the shredded paper fiber stuff. And another thing, she's actually been fairly well behaved tonight. She hasn't bitten sakura once tonight. Never the less, we've made an appointment for the procedure.

Here you go.

Excerpt: The stage of intense curiosity, hyperactivity and frantic chewing and digging occurs at the height of adolescence. This is also about the time that we recommend spaying or neutering. People often expect an overnight cure for what they consider behavioral problems. But what are we trying to "cure," hormonally induced behavior or age related behavior? The former will be eliminated by spay/neuter surgery, but the latter will still have to run its course... I tell people not to expect dramatic or abrupt changes and that it can take as long as eight months for a recalcitrant rabbit to calm down. I'm implying that it takes that long for the hormone level to drop in some rabbits, but that also allows some time for maturity.

Here's the spaying and neutering FAQ, and, of course, there's a lot more info at that site. I've read elsewhere (dunno where) that sometimes they need to be retrained re. potty behavior after spaying/neutering.

By way of thanks, my goofy doodle.

≡ Click to see image ≡

OMG! Alice just attacked the 20lb cat and chased him out of the room!

heehee. Love the doodle.