Carlos, how often would you estimate this occurred during the show? I would say once every three weeks, but I'm interested in what you think.
I finally got my notes, and I randomly choose Season 22 (Sept. 1993-June 1994) to look at for this question, and here's what I found:
21 adoption segments:
Cat--Sept. 16 and Jan. 14
Dog--Oct. 8, Nov. 9, 17, 29, Dec. 9, Jan. 4, Jan. 24, Feb. 1, 11, 25, Mar. 9, 16, 30, Apr. 27, May 5, 13, 31, June 8, 16
Ten years later, in Season 32, (Sept. 2003-June 2004):
31 adoption segments:
Rabbit--Jan. 9 and Feb. 24
Cat--Oct. 13, 20, Nov. 17, Dec. 18, Jan. 2, 22, Feb. 3, and Mar. 30
Dog--Sept. 29, Oct. 2, 24, Nov. 3, 10, 24, Dec. 3, Jan. 15, 29, Feb. 10, Feb. 17, Mar. 2, 8, Apr. 6, 20, 27, May 4, 25, 28, and June 6, 15.
Maybe a little
too much information, but I hope it provided some insight.