As Amanda Huntington on Quora pointed out, the term "anime" is a condensed version of "animation," which includes all cartoon TV series.
However, in the United States, the term "Japanese Anime" usually implies that the show originated in Japan
and has been dubbed or is exclusively available in Japanese.
Because the Pokemon animated TV series is both a cartoon and produced in Japan, both descriptors are appropriate.
Because of how it is produced, a die-hard Japanese animation fan may consider it an anime, whereas newer fans or people who simply enjoy animated shows may consider it a cartoon.
Someone just turned Pokemon Red into a three-hour movie