The 22-year-old woman, from South Wales, told the social media site that she had put the cat 'knee deep' in water for eating her food.

She wrote: "Can't believe my fking cat ate a £15 pizza, fat st.

"I'm livid, I been looking forward to that all day like!"

She added: "My **** will be getting wet tonight, let me tell you!

"Little s**t! Who's having a few cans?"

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A few minutes later, she posted an image of a cat box submerged in bath water, writing: "Have a bath to go with your pizza, you fat ****."

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The woman was bombarded with threats after the image was shared, with more than 3,000 people signing a petition demanding that she have her hime investigated by animal rights authorities.

The petition read: "If you carefully look at the photo, you can’t actually see the cat taking a bath, which technically means there is no actual evidence.

"In a Facebook post published yesterday, she claims she did not put down her cat and criticized animal lovers for attacking her.

"I am personally not making any accusations - it might all prove to be one big fat joke.

"But if this is true, this incident is unacceptable. At this point, details are rather scarce, so by this petition I am urging the RSPCA to intervene and launch an investigation into this matter as soon as possible.

"We want answers and we want to find out if the cat is okay!"

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Others shared the woman's address online, while still more subjected her to violent threats.

Today the RSPCA confirmed they responded to reports of animal cruelty at the woman's house, but left satisfied there was no further danger to the animal.

"We can confirm that we were alerted to a photograph on Facebook which appears to show a cat being placed in to a travel basket and put in to a bath of water as a form of punishment," a spokesman said.

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"Our inspectors have investigated the matter and checked the cat's welfare. They have also spoken to the person involved in the incident and given them advice."

"We are grateful to the members of the public who brought this matter to our attention and we would like to reassure people that the cat involved in the incident was, thankfully, unharmed.

"We would strongly advise against reprimanding any animal and the RSPCA believes the best form of training is through positive reinforcement."