I feel I like animals a lot and relate to them a lot, but I'm not a lesbian..take it what it's worth.
Maybe lesbians can't get along with people (because they get made fun of), but rather find comfort caring for animals because they can't talk back or say anything. "Can't get along with people because they make fun of us"? My partner and I have no trouble at all socializing with the world at large either at home or in our worldwide travels.
I think "working in, or running, animal shelters" is overly specific, but I do have the impression that perhaps a larger than average number of lesbians work or volunteer with animals.
Once again, the places with the highest ratios are smaller metros: Hanford-Corcoran, California, with 1,859 single men per 1,000 single women; Jacksonville, North Carolina, with 1,777; The Villages, Florida, with 1,724; Watertown-Fort Drum, New York, with 1,445; and Michigan City-La Porte, Indiana, with 1,438.
But the truth is, the most realistic picture is achieved by charting singles across a series of age ranges. Younger single men outnumber younger single women across the board.
I also used to be a lesbian sports league and quite literally know hundreds of other lesbians, and I don't think I can say that any one of them is particularly shy or feels ostracized by society in general. I don't think any of them work with animals except for the two who own a hobby farm in addition to their day jobs.
Most of the lesbians I know actually work in very social jobs that require them to deal with people on a day-today basis.
For some reason I know a vast number of lesbian lawyers, a lot of lesbians teachers, and a large number work in health care: off the top of my head I know several lesbian chiropractors, RMTs, therapists, nurses, and alternative medicine practitioners.
Edit: Now that I think about it I really know a lot of lesbians who work in some kind of health care or teaching profession.
In our queer girl coffee klatches, I'm often the only one of a dozen or so attendees who actually works for a non 501(c)3 corporation.
I think it is true that lesbians on average do more volunteer/aid-based work than heterosexual women.
New York has an estimated 230,000 more single women than men, Atlanta a little over 80,000, Philadelphia about 70,000, and D. Paul, Phoenix, Denver, Salt Lake City, Austin, and Portland, Oregon.