EastScape Wikibuilt from the game itself
Mossboar egg
“Laid by a Greater Truffle Pig and a Greater Mossback Tortoise in the pen (Breeding 70). A hatchery and 3 Ordinary pet food: a Mossboar in 48 hours. Tradable.”
Hatches
Hatches into 
Mossboar in your island's hatchery, in 48 hours.
The Prize Counter
Bom pays 26,000 tickets for it.