New Zealand unicorn Halter, founded by the son of farmers, Craig Piggott, is one of the fastest-growing players in the ...

This is the fourth part of Mongabay’s series on the expanding wolf population in California. Read Part 1,  Part 2 and Part 3.

Two years after residents voted to reintroduce wolves in Colorado, ranchers there say too many of their cows are being killed. The state is now hiring people on horseback to help.