I had a holdback 'female' pastel that I raised up to breeding size. Then I put a male with her. The sound of crashing and thumping drew my attention later that day, and I found them locked...in combat, lol.

Taught me to triple-check my holdbacks as thoroughly as I do the sale animals.
"Sunna" became "Sumo" (he was a good wrestler), and is being paired with a woma girl this year.