I loved this cartoon very much as well as its big brother, The Pink Panther. Why they don't make cartoons like this anymore, I'll never understand.
Jackie Mason NEVER, EVER did any voices on this cartoon. The Jackie Mason-type voice was the incredible impressionist/comedian/actor John Byner doing a dead-on impression of Jackie Mason. Byner did both the Ant & the Aardvark, which isn't unusual as most cartoons have voice actors doing multiple voices. Look at The Simpsons --- Hank Azaria & Harry Shearer probably did about 30 voices between them on a regular basis.