The Sydney Morning Herald reports that Sydneysider Ben Mulligan has branded Woolworths’ claim that the salad he bought was “washed and ready to eat” as all “LIES!!!” after he says he found an amphibian friend alive in the bottom of the bag.

Mr Mulligan took photographs of the frog inside the pre-packaged Aussie salad and posted them on the supermarket chain’s Facebook page on Monday night.

“It appears that you forgot to list FROG on the ingredients of your pre-packaged salads, Woolworths,” Mr Mulligan wrote to Woolworths.

“This is disgusting. I ate some of this salad. I could DIE! This poor frog. Wait until PETA hear about this.

“I feel disgusted… disgusted, and still hungry, Woolworths. I bought the salad for me to eat. Not for a FROG to eat. The frog didn’t pay for this salad.”

Within a day of being posted online, the photographs had been shared more than 650 times on Facebook and had attracted nearly 2000 comments.

When contacted, Mr Mulligan said he was discussing the matter with Woolworths and couldn’t comment immediately.

In a statement, a Woolworths spokesperson said the company was investigating the incident.