According to forest department officials, the carcass of a leopardess was recovered yesterday from a field in Gadkhet village of Garud area in Bagheshwar district.
The post-mortem examination report concluded that the one-and-a-half-year-old feline had died of pneumonia.
In a separate incident, another carcass of a leopard was found in Tiwarikhola village of Betalghat area in Nainital district.
The carcass bore a wound on the back, raising doubt that the big cat could have perished in a fight with another wild animal, the officials said.
A post-mortem is being conducted to ascertain exact cause of the death.