A 38-day expedition in the remote Alto Mayo region, where development threatens wild habitats, turned up one previously unknown animal after another.

The agency recommended that the maker of Librela update its label to reflect the possibility of more serious adverse reactions.

© Octavio Jones for The New York Times

A Times investigation found that zoos knew conservation money went toward apartment buildings and roads. But they wanted to keep displaying pandas, so nobody looked too closely.

In the 1990s, China began sending pandas to foreign zoos to be bred, in the hope that future generations could be released into the wild. It hasn’t gone as planned.

The panda census methodology is widely seen as flawed, and China keeps the data shrouded in secrecy.