An animal charity based in north London says its seen a massive increase in the number of pets being abandoned.
Wood Green says it is now looking after 30 percent more stray and abandoned animals than a year ago.
The latest pet to be dumped at the centre is five-month-old cat Milo.
CCTV released by the charity shows the moment he was left on their doorstep, early in the morning last week, by a woman wearing a hooded coat.
Centre staff arrived an hour later to find the cat huddled in the corner of his carrier, cold and frightened.
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"All it takes is for somebody to see me - and I could just die, just like that. I could want to go to the shop and not come home."
Before the killing, Peters searched the internet for "serial killers", "treatment of child killers in prison" and "premeditated murder".
Arriva Rail North, Greater Anglia and South Western Railway are all affected.