The former zoo owner, 58, took to Twitter on Friday to share his cancer diagnosis
In his social media post, Exotic wrote: 'My PSA count came back very high for prostate cancer. The prison has approved testing to verify what stage it is in'
Exotic once again pleaded for a pardon from President Joe Biden in the wake of his illness, but claimed he didn't 'want anyone's pity'
He was convicted on 17 federal charges of animal abuse and two counts of attempted murder for hire in his plot to kill his rival Carole Baskin in 2019
Exotic is currently serving a 22 year-sentence in prison