I wanted to clear up, in case there were any misconceptions, that I also do adopt on personality. When I was first looking for a cat I did look at several cats, both male and female, but it was a week after Christmas and not onlly were there not many cats, there were not many females. Then I saw a picture of Loki online and I knew I had to meet him. When I found Possum's picture online I wasn't seriously looking for another cat (just considering it), and then I saw him, and again I knew I had to meet him. He was the only one I looked at. I am biased for male cats, but if I found a female one who I knew was perfect for me I'd get her.
Still, I would only consider female dogs, though. I know there are wonderful male dogs out there, because I've met, dogsat, and loved them, but there's something about female dogs that I just love more.