How early do I need to be there to ship puppies with delta cargo? They are saying 4 hours but that feels a little extrem.

I think the animal has to be booked at least 2 hours before the flight. Don't expect short lines or prompt service.

4 hours especially during the peak travel season and if you want to make sure they are on the flight you prefer.

4 hours is correct.

There are many animals that are sent out, and there is a lot involved in the process to ship them. I'd recommend 3-4 hours before the flight is supposed to leave.