They follow their nose, it always knows, the flavor of fruit, where ever it grows............. People never remember to put their pets in their wills, the ASPCA on their web site will send you a pet alert card for your wallet, it tells rescuers you have pets at home that need care if you are unable to speak for yourself or die, I have it in my will where my animals go, and since I have around 100 (thanks coyotes for eating my live stock ). I also like the stickers for your home windows , used to come stickers for children you put on the kids bedroom windows, and sticker for cats and dogs you put the number of each you have and rescuers will try to save them also. sorry, I'm rambling, l love animals more then people. which no one understands why I didn't become a vet instead of dealing with humans...
trust me, veterinarian or vet tech, you will be putting up with a lot of moronic people. Im in the biz.