Parque das Aves lost more than a 170 Chilean and Greater flamingos in 2021, due to a mother-son Jaguar pair that invaded their exhibit to hunt, with only four individuals remaining. Their flock was at the zoo since 1995 and had an amazing breeding sucess.
Altough my local zoo was the first and only in Brazil to have reproduced elephants, unfortunately the story with the species has been quite tragic, and might come to a sad ending

:
The first African elephant bull that lived here, called Joca, died in his early 20's due to both tuberculosis and ingestion of plastic bottles thrown by the public in 1995.
In 2010, an African elephant call named Dandara died at 15 years old due to not being able to give birth to her first calf, who was a stillborn.
In 2021, another cow named Beré died at 46 years old due to a generalized infection due to both pulmonar and uterine infections, the latter which resulted due to problems with her very first pregnancy. If it weren't from these uterine problems, she probably could've had more sucessfull pregnancies.
And lastly, about a month ago, the last bull in Belo Horizonte, 29 year old Jamba, passed away in a cirurgical procedure made to treat a problem in one of his hind legs. This one really hurt me, as not only he was very dear to me, being part of my whole childhood and adolescence, but also because now the future of the species in Belo Horizonte is uncertain, due to only an elderly cow remaining here.