an elephant defecates at a speed of six centimeters per second, nearly six times as fast as a dog. The speed of defecation for humans is in between: two centimeters per second.
defecation duration is constant across many animal species – around 12 seconds (plus or minus 7 seconds) – even though the volume varies greatly.
One of the big findings of our study was that feces extend halfway up the length of the colon from the rectum.
https://www.pbs.org/newshour/health/takes-elephant-amount-time-poop