One day, Meowth came across a female Meowth named Meowzie. She rejected him, saying that he was poor and that she preferred humans, so Meowth attempted to make himself more human-like to make her love him. Thus, he painstakingly taught himself to speak human language and walk upright like a human.

Is talking Meowth rare?

They have failed to realize throughout the entirety of the show that they have in their possession the rarest Pokemon of all, a talking meowth.

Why does Meowth hate Persian?

While Meowth simply dislikes Persian due to a stigma that he has developed upon constant gags of him being rejected in favor of one. He is shown to have a strong hatred and jealously towards Giovanni's Persian particularly. ... Technically and ironically making him Giovanni's Persian's superior!