Thanks, Artocarpus and fruit nerd!
Artocarpus, funny enough, I do put chicken wire around whatever I put out in the yard (even if the rabbits don't want to eat it, they're certainly not beyond biting into young trunks or decapitating small plants)--was just shocked that they're coming onto the Lanai and driveway to munch on the Jackfruit seedlings. And you mentioned the seeds being dug up? I think I just learned why I haven't had much luck sprouting Jackfruit seeds lately 😬