For me, my biggest zoo highlight for 2013 was visiting the Gladys Porter Zoo, interesting species I saw included Jentinks duiker, West african bushbuck, Central american red brocket, Bornean bearded pig, and many others!, I very much enjoyed it!
Another big zoo highlight was Los Angeles Zoo and Santa Ana Zoo seeing Calamian deer and Mountain tapir at the former and Margay at the latter
For 2014, my possible long term goals are Shadow Nursery to see MacNeills deer, Gayal, Southern bushpig, Persian fallow deer, Altai wapiti, Kiang, Kulan, Nubian wild ass, North indian muntjac, Brazilian tapir and others, Larry Johnson's Place to see Gray rhebok, Javan rusa, Bharal and others, San Antonio Zoo to see Topi and African palm civet, and the Capitol of Texas Zoo to see Fanalokas and if they still have them African civets
As for a short term goals, I am going to the Living Desert tommorow to see Slender horned gazelles, but on another day I also need to photograph the Northern white rhinoceros, Barbary red deer, Red fronted gazelle, Uganda kob, Giant elands and Kordofan aoudads at the San Diego Wild Animal Park.