The USDOT number is required under the FMCSA regulation for Commercial Motor Vehicles that operate interstate. It allows Federal and State Agencies to track company's information.
What is a US DOT Number?

Computers need special care and handling during the moving process. Computers are not only valuable, but data is often irreplaceable. Preparing a computer for a move takes just a few simple steps.
How to Pack a Computer

Local moving companies and labor helpers are not permitted to transport their customers' pets. So the best way to transport pets is in the car with you.
Moving With Pets