Today,thanks to nature lovers .some of the world"s endangered animals are actrally growing in numbe
Years ago,for example,people felt that wolves were dangerous ;they killde so many wolves each year that soon wolves were almost gone.Nature lover grew worried.They didn't want wolves to disappear.
People passed laws to peotect wolves.They captured wild wolves in Canada and let them free in the American forests.Scientists kept track of the wolves to make sure they would live .Soon,wolves began to be found in the forests of the Midwest.