If the leg parts are on the same mesh as the main part of the frog, and you have a Fixed handle on the body and Mousetrack handle on the leg, it should pull away. e.g., like the template puppet when you use the New Puppet in Photoshop/Illustrator commands.
That's a nice puppet!
Jeff mentioned one approach -- placing all back-leg elements into a single puppet and then using handles to squash and stretch that leg.
There are a few drawbacks to keep in mind with that approach. The initial leg position should neither be fully squashed nor fully extended but something 3/4 towards full extension.
You may also not have control over occlusion to ensure that the foot is always in front of the thigh, for example.
The other approach is to attach multiple sub puppets via attachTo. If you don't mind posting a PSD file with the elements for one of the back legs, I can test it out and post a PSD template.
If not, I will go ahead and post an example with simpler artwork.
Thanks for the input! I'll try out both methods to see what they do. But here is the file for a leg if you want to play with it. I'm sure others will want to know too.
Here is a re-structured psd file that attaches limbs together:
Note that I removed one of the hidden feet as I didn't know what you had in mind for it.
(Note, if you want fine-level hand-drawn animation look you can use CycleLayer behavior to animate the entire motion of the leg just how you want it.)
When I do this, I often use the Puppet panel to verify attachments. Here is a short screen capture that shows of how to do that by inspecting the attach to field in the property panel:
Finally, here is a movie of that leg in action:
Let us know if you have any other questions.
Thank you so much! I will be trying it out today.
PS: Sorry I didn't use Adobe Cloud for my file. I've never had a reason to use it before and didn't think of it. I'll use it now for any future file sharing.
Use whatever online storage is most convenient for you to send us test files. There is no requirement to use a particular one.