That says it all :-) Caveat emptor; these come from reputable sources but I can't vouch for all of them. If you have suggestions for items to be added/removed, please let me know at email@example.com
Training for work in zoos (from Zool Soc. San Diego ZooNooz Sept. 2002). There are three Associate's Degree programs in the US designed to train professional zookeepers: Moorpark College (CA), Pensacola Junior College (FL), and Santa Fe Community College (FL).
Animal health technician programs leading to RVT (registered veterinary technician) certification are useful for zookeeper (and I assume some field conservation positions); the ones listed by ZooNooz are: Colorado Mountain College (CO), Pierce College (CA), Quinnipiac University (CT), and San Diego Mesa College (CA).
Bachelor's degrees in zoo science are offered at Friends University (Kansas) [note: I got firewall error trying this site, but may have been temporary], and Michigan State University (MI).
For information on summer internships for college students at Zool Soc. San Diego's CRES, email SSpackman@sandiegozoo.org. These are competitive, they get something like several hundred applications for each slot, but what the heck -- go for it!