It is already possible to easily download and save the pets in the puppy-lucid repo.I often wondered why there isn't a possibility in PPM to download the selected PET instead of installing it.
I prefer to download the PET to a directory of my choice.
Same for me.
http://distro.ibiblio.org/puppylinux/
Then choose pet-packages-lucid
This is where the Download link on puppylinux.com takes you.