Many zoos will kill animals deemed in excess, meaning that they deem it too costly to expand spaces for these animals, so instead of selling them to other zoos they usually just kill them now. This is inhumane as it is killing animals, who are healthy, without any reason whatsoever other than greed. These animals can feel pain and euthanization, especially administered poorly, is extremely painful. The fact is to prevent overpopulation sterilization of some animals is necessary, but zoos refuse to do this, perhaps due to its expense. Make it a felony offence under the Animal Welfare Act of 1918 to euthanize an animal in a zoo that is healthy, and instead promote sterilization as a form if population management, as well as increasing funding for zoos so they may accomodate extra animals