Horses defecate while doing whatever they were doing when the 'urge' hit them. If they were standing still, then yes, they stand still. If they were walking, then they walk when they defecate. If horses are alarmed, they often defecate while running away.
8-12 times a day. But this level can change (for example more when excited)
You just defecate.
Yes, snails defecate
When they eat food, they have to defecate. They would also defecate if they have intestinal problems or sickness. Also, fear and stress can make animals defecate.
Rats defecate where it is convenient for them.
Seals defecate almost anywhere.
Zebras don't "go to the bathroom" that's a human thing. Zebras urinate or defecate probably 5 to 10 times a day, and urinate and defecate just like any animal, mammal or horse would.
Defecate on My Face was created in 1986.
Anything that eats anything (Ticks live) can defecate.
Reindeer normally defecate in the woods in the land they inhabit
Tortoises defecate through their cloaca, which functions as their anus.