Operational needs
Virescit Vulnere Virtus
That all depends on the state and/or local ordnances. Some states/counties require you to have control over your dog, even on your own property.Hit a dog on the street? Not your fault.
Hit a dog in a driveway? Your fault.
FedEx might pay it though just because they don't want the negative publicity. Or in this case force the contractor to pay it.