Animals have been part of The Simpsons landscape since Snowball I was introduced in the shorts. In its 37 years on air, we watched plenty of animal episodes advocating for their rights and well-being.

Sam Simon, a philanthropist best known as the co-creator of the animated sitcom, “The Simpsons,” died on Sunday at age 59, The New York Times reports. He was diagnosed with colon cancer in 2012. Mr.