Hi all,
Catching up on all of the threads that I've been neglectful in reading!
The zebra that died in January was Keshia (sorry Quartz! doesn't begin with S); she was 29 years old and had been diagnosed with a metabolic disease.
I believe the hiatus in breeding the Amur tigers was because of the SSP; Tonghua was very high ranking (his mother was wild-caught), but Tatiana was not a very good match (high mean kinship with the population). As the other tigers in the population reproduced, Tatiana's "stock" rose and so we got the green light for Jack and Coco. They had not been put together for breeding yet this year, but Tatiana's leg problems turned out to be hip dysplasia, a potentially genetic disorder which would make breeding her unfavourable. (Hip dysplasia is common in some dog breeds)
And some exciting (if far-away) news: we have finally gotten another recommendation from the babirusa SSP, and if things go according to plan they should be arriving some time next year.