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'

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

The charity said it is keen to convey its message that owners should neuter their pets if they want to avoid more unwanted animals.

BBC: Credit crunch 'prompts abandoned pets rise'