Sorry, that should have read a lattice deformer. This deformer creates a box around the select model or faces, pulling the lattice points deforms the model the lattice is attached to. Once you have the model deformed to you liking, delete history on it to remove the lattice and keep the deformations.
I still think the top joint of the front legs are fine where they're at. You just need to bow out the front legs to the knees are away from the body. Review the link in my previous reply.
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