What are your potential emergencies? Have you made a plan for your pets for each of the possible scenarios? If you shelter in place, do you have a few weeks of their special food or other needs on hand? Great to have an indoor cat, but not so pleasant after a few days if you have no litter for their inside box.
What if you need to GO! due to flood or gas leak? Will your pets fit in your escape vehicle? Do you have room for Fido, his food, the kids and your stuff? Do you need a special carrier to keep the iguana from being crushed under the accelerator as you get out of Dodge? Do you have a place to land that will welcome your 12 foot Boa constrictor with open arms?
If you plan is to leave them behind and let them fend for themselves, you are either naive or cruel. If you do this, their future is between short and bleak because they have no skills or are not native to your area. Small pets will probably be eaten alive by larger predators. Tropical reptiles may freeze to death or find others and multiply, like the brown snakes of Guam. Larger dogs may find one another and form packs to attack and eat the smaller animals or attack people when they return. For that, Fido will probably be shot if he doesn't starve to death first.
If you haven't included these trusting creatures in your plans, and thought about the least-cost way to manage them, start now. If you do not have pets now, be sure to think though these issues before you get a special friend.