First, I was sent an e-mail requesting for a phone interview. They asked me to post two times that would work best for me for an interview. They said to allow approximately 30 minutes for the phone interview.
When I was called for the phone interview, they asked a couple of behavioral based questions. They of course will ask you how you feel about animal testing, and if you are affiliated with PETA or any other animal rights group. The one behavioral question that I remember her asking me was "Tell me about a time that you worked as a team, and tell me what your role was in that team."
The questions definitely require some thinking, but don't get choked up thinking you have to answer right away, They send you an e-mail before your interview to let you know that the interviewer doesn't expect an immediate answer, it's okay to take some time to think about the question and come up with a good response.
After the phone interview it took about two weeks and I was e-mailed to set up an on-site interview. At the on-site interview, they asked A TON of behavioral questions and the interview lasted about an hour. I did feel very comfortable with the two interviewers I had. They were very nice and I was able to joke around with them a little bit which helped me relax. They told me that I would hear back with an answer in about 3-4 weeks. 5 weeks went by and I didn't hear anything, so I went ahead and e-mailed the interviewers and then they promptly sent me an e-mail letting me know that they had chosen another candidate.