@sanfranciscozoo: Special of the Day: roses! Our two Western Santa Cruz giant tortoises are seen enjoying the sunshine and some tasty roses! This critically endangered species is native to the Santa Cruz Island in the Galapagos. As giant tortoises, males can weigh between 500-550 lbs., or more! Find them at Puente al Sur. 🎥: Megan B. #sfzoo #tortoise