are put down Animal Abandonment and Pet Overpopulation euthanized every year dies from euthanization every 8 seconds dies from euthanization every 8 seconds spay-and-neuter alive. Humane Society of the United States Pet Overpopulation dies from euthanization every 8 seconds The Humane Society Pet Overpopulation – Humane Society of the US dies from euthanization every 8 seconds Humane Society of the United States http://www.humanesociety.org/issues/pet_overpopulation/ overpopulation 2.4 million HSUS says the Humane Society. http://www.humanesociety.org/issues/pet_overpopulation/ significant portion reality pet overpopulation pet overpopulation Pet Overpopulation Â Â» Humane Society overpopulation figures. 4 million cats and dogs about one every 13 seconds The Humane Society The Humane Society of the United States: Pet Overpopulation Pet Overpopulation 4 million dogs and cats are euthanized http://www.humanesociety.org/issues/pet_overpopulation/ dies from euthanization every 8 seconds Source Humane Society of the United States http://www.humanesociety.org/issues/pet_overpopulation/ Pet Overpopulation – Humane Society of the US http://www.humanesociety.org/issues/pet_overpopulation/ http://www.humanesociety.org/issues/pet_overpopulation/ http://www.humanesociety.org/issues/pet_overpopulation/ Human Society of the United States