Writing on the Facebook page of CNN affiliate WXII-TV, Cheri Iverson said her pets have tattoos applied at local spay-and-neuter clinics.

CNN: Dog tattoos cruel or prudent?

An interim solution involves setting up high-volume spay-and-neuter clinics that can do dozens of operations a day for a fraction of what a full-service vet charges.

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Battersea Dogs and Cats Home also expressed concern that pet owners are unable to afford to neuter or spay their animals, and are financially unable to deal with the consequences.

BBC: Credit crunch 'prompts abandoned pets rise'

"Now we're doing adoptions, we're doing search and rescue, we're helping people out with spay and neuters, and we're helping out other animal controls with animals that they can't place, but think deserve a shot at a life, " Katherine said.

CNN: Rude Ranch a haven for animals down on their luck

Mexico City Mayor Miguel Angel Mancera said his government would launch a new program to spay and neuter dogs in order to reduce the number of animals in the street, sending 25 mobile surgical units to neighborhoods where residents would be encouraged to take advantage of free sterilization for their pets.

NPR: Officials: Possible 5th Killing By Mexico Dog Pack

His wife, with his support, started The Long Island Spay and Neuter Fund which is a non profit that assists their community in the humane control of the stray and feral cat population using trap and release method after being spayed or neutered, whom currently houses and cares for over 20 cats while desperately trying to find permanent homes for them.

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