This charming little tropical petting zoo (Hwy. 307, tel. 998/850-3719, www.crococunzoo.com , 9 a.m.–5 p.m. daily, US$23 adult, US$14 child 6–12, free under 6) is located five kilometers (3.1 miles) north of the Puerto Morelos  turnoff.
Seventy-five-minute guided tours, offered in English or Spanish, bring visitors up close and personal to all sorts of local creatures—if you’re up for it, you can feed spider monkeys on your shoulder (food appropriate for the animals is sold for US$2 per bag), walk through a crocodile enclosure, and hold boas, iguanas, and baby crocs.
Don’t forget your camera. Well managed and relatively affordable—compare this to swimming with the dolphins!—Croco Cun is a hit for youngsters and adults alike.