Two governors told federal lawmakers on Tuesday that the process of removing species that have recovered from the Endangered Species Act as soon as possible is needed so that other jeopardized animals and plants can receive attention.

Wolves and grizzly bears in Montana and Wyoming have been removed from the endangered list by the U.S. Fish and Wildlife Service.

In recent years, both the animals have grown rapidly which had caused major headache to ranchers as they prey upon sheep and cattle ahead of the Yellowstone area.

Wyoming Gov. Matt Mead and Montana Gov. Steve Bullock witnessed that the grizzly bears remain endangered region-wide whereas wolves remain endangered in Wyoming.

The species in the endangered lists are also affecting coal, oil and gas developers in Wyoming, said Mead, a Republican. The endangered species need to be relisted in order, said members of Republican committee, including Sen. Dan Sullivan, R-Alaska.

Mead said out of 1,500 species that were listed in endangered species in the 1973 Act, only 30 have been delisted as they have recovered.

Dan Ashe, Director of Fish and Wildlife Service, told the senators that delisting of grizzly bear would be done soon.

"Wolves in Wyoming are recovered. It's one of my greatest disappointments as director to, at this point, have failed, we should be working on bull trout, or wolverine, or greater sage grouse that can be helped with protection or conservation actions”, Ashe added.

The act of endangered species has saved 99% of listed species from extinction. In past years, success rate of recovery has been noted.

"The delisting process must become more straightforward so we can focus our collective resources on species that may need more attention," said Bullock, a Democrat.