Did you find a stack of meat where they used to be? If so, they've likely ascended. :) (i.e. gone to the great beyond, left this mortal coil, kicked the bucket)
Alternately, have you given out any keys to your house?
yes, in my yard. no food, havent been there in a while. and there is a stack of meat.
and i gave one key, but that person is the previous owner, and wont steal. at least not from me.
i only got 2 piggies left!
and i hog-tied them to prepare for my moving.
I recall reading a post by the developers that suggest they do have a limited lifespan. So, basically, you have to keep renewing your herd of piggies to keep a steady meat supply from your own back yard.
the stack of meat is a sure sign they died, probably from a lack of food. The remaining piggies may have eaten meat from dead piggies, so be sure to ALWAYS leave them food or near a tree.
Alot of pigs have actually died over it last week because while everyone was at the street projects the pigs didnt get fed and died. I was wandering round nibbling but they were too hungry so I gave every pig a stack of meat. Anyhow back on subject your pigs hAve gone to a better place. Points to one of the animal/nature gods. Humbaba isn't it
i dont nibble and look away, but i didnt go to my house for a pretty long while as i was mining. and i didnt know pigs could actually die. btw, do other animals die? anyway, i got 2 trees in my yard where i keep the piggies. and my yard is pretty small. i mean VERY VERY VERY tiny. and, u mean i dont have to return daily to feed but i can actually leave a stack of food there for the piggies to eat? wow. that's great.