(SPAY USA, 2005) Additionally, aggressive strays spread rabies, disease, and are virtually impossible to find homes for. Even if one has money to burn in caring for an animal, remember that the capture, impoundment and eventual destruction of unwanted animals costs taxpayers and private humanitarian agencies over a billion dollars each year. As a potential source of rabies and other less serious diseases, these stray animals are, if nothing else a public health hazard. (the American Veterinary Medical Association, quoted on SPAY USA Website)

The fate of the animal population rests in responsible pet owner's hands. Dogs and cats cannot chose to exercise socially responsible lifestyles in a world that is human rather than animal created. Thus pet owners must do it for them. By spaying or neutering their animals, pet owners create better companions, healthier lifestyles for themselves, better pet and human relationships, better and safer communities, and fewer unwanted strays.

Retrieved 14 Feb 2005 at http://www.spayusa.org/main_directory/02-facts_and_education/benefits_sn.html
Meenen, Kimberly (2001) "Facts about Spaying and Neutering Pets Outweigh Myths University of Illinois College of Veterinary Medicine Website. Retrieved 14 Feb 2005 at http://www.inkabijou.co.uk/spay.htm

Myths and Facts about Spaying and Neutering" Humane Society of America Official Website. Retrieved 14 Feb 2005 at http://www.hsus.org/pets/pet_care/myths_and_facts_about_spaying_and_neutering.html

Why do we recommend neutering pets?"(2001) Dr. Larry -- Dr. Pet Vet Website. Retrieved 14 Feb 2005 at http://www.drlarrypetvet.com/owner_spayneuter2.htm

Why Spay or Neuter?" (2005) ASPCA Official Website. Retrieved 14 Feb 2005 at http://www.aspca.org/site/DocServer/spayneuter.pdf?docID=188