It depends on how the package was booked.
If it was booked with Delivery Confirmation (an extra charge) then an adult must sign for the package for it to be left.
If it was NOT booked with DC, then it can be left in a "safe place" by the driver.
If the driver encounters a human being on delivery, they will also request a signature while they are there.
But there is no default requirement for a package to be signed for, live reptile or otherwise, under a "normal" booking.
I do not know whether FLChams books their shipments with DC required or not.