Miss_Vulf said:
"The way I heard it was that Ted Turner himself simply thought the show was too violent for kids, so it was downplayed to fail. Buried on early Sunday Mornings (a ratings death slot for this kind of show), no decent merchandise to speak of (though it would have been a toy company’s dream). I’m surprised we got to do a second year."
tl;dr: Ted Turner cancelled Swat Kats.
Uh... right?
Correct, there was also a rumor that another reason for it's cancellation was that Ted Turner was sexually attracted to Callie Briggs.