How old is jerry in tom and jerry?

First cartoon 1940. First cartoon with names Tom and Jerry 1941'

tom is 5 from tom and jerry

Tom is the cat and Jerry is the mouse.

The first cartoon was completed in late 1939, and released to the movie theaters on the 19th of February 1940. Do u watch Tom and Jerry Tales on 4kids.tv

Only pet owner knows it,go and ask. ummm ok .... nice answer......the first Tom and Jerry cartoon was in theaters around 1939...