Although the appetite of each individual chicken may vary, overall, chickens are a good natural predator of ticks on cattle. (wideopenpets.com)
A green sea turtle can live up to 80 years in the wild and once they have reached maturity they have few natural predators in the oceans. (twofishdivers.com)
Or getting breeds that are susceptible to being killed by natural predators when left in the back yard. (samthedogtrainer.com)