Animal population will occur in the coming generations are genetically susceptible. Resistant to diseases and the ability to adapt to the environment less. And the risk of extinction at a faster rate.
Make the animal population will occur in subsequent versions have a genetic weakness. Disease resistance and the ability to adapt to the environment and have fewer risks extinction rate fast.
Make animal population will occur in the future versions, there is a weak genetic resistance to disease, and the ability to adapt to the environment and there is less risk to the extinction rate faster.