female bunny aggression

Question
Hello.  We have two Netherland Dwarf  rabbits, both about 4-5 months old.  We just got the male neutered about two weeks ago and he's doing well.  Since then, however, our female, Lily, who was the sweeter, calmer of the two is starting to act aggressive.  She bit my husband and son and lunges at me when I try to grab her to move her for cleaning purposes or to try and put her in her bigger exercise cage.  Will this last?  My vet said to give it 10 days, (it's already been a week), and she should calm down again.  She's ready to mate, I guess and is frustrated?  He also isists that it takes 6 months to guarantee my male won't get my female pregnant.  Also, he says it's not necessary to alter the female.  What do you know about all this.  I must admit, I had no idea what I was bargaining for when I got the rabbits.  I've already spent at least $500 to get them "situated" and now, since we travel fairly often, it's going to get costly to board them.  They can't be left alone over a day, can they?  Thanks so much.  I hope once I figure this all out, they'll be two healthy, happy, friendly bunnies who are "worth it" all.  

Answer
The female agression is definatly a breeding thing. Should last no longer than 14 days, but it can go longer. Sometimes does after reaching breeding age, become cage agressive, which does stay with them, usually until bred. She is frustrated, because she knows the other rabbit is male, but nothing can be done. It shouldn't take 6 months because your male should have had his testicles fully removed. If not, then I am not sure your vet did his job correctly. Rabbits can be awesome pets, but they are more work than most people belive them to be.
You will not need your female spayed unless the agresssion doesn't stop on its own and you cannot take the behavior anymore. Breeding does help almost 100% of the time.
Rabbits will be fine a day or two by themselves as long as they are given enough feed, hay, and water to last them. No need to board them if you are only gone a day or two.
I am sure they are already happy, and are going to stay that way. You seem to be taking good care of them.
Samantha
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