When Canadian rancher Dianne Riding strides across her brown pasture, sidestepping cracks and popping grasshoppers, she has less company than usual.

Record-setting heat and sparse rain left Riding with too little grass or hay to feed her cattle near Lake Francis, Manitoba. She sold 51 head at auction in July, about 40% of her herd. The sales included 20 heifers, young cows that have not given birth, that were potential breeding stock.

"That's your future. As my herd goes down, so does my income," Riding said. "It's gut-wrenching."