Orloff Park in Pleasanton.  It has a rubberized surface in the tot area.  It also has a great play area for bigger kids and a large grassy area where you can run your dogs.

Maitland Henry Park in Livermore.  My 5-year old son calls it "Pine Cone Park" because he always collects pinecones when he's there.  There's also a grassy area where you can play with your dogs.

Lester Knott Park on N. Mines Rd in Livermore.  My son and our two golden retrievers love to run up and down the big hill and around the park on the sidewalk.

Osage Park, Danville -- big park with multiple structures, sand area, picnic tables and a very cool water area with rocks...reminds me of a little creek but not that deep.

Val Vista, Pleasanton -- there is one structure that also has a shooting water feature and then further down is another part of the park with two play structures, water features and a creek-like area with water.

Emerald Glen Park, Pleasanton -- most of you have probably been there, that is another awesome park with the water feature and play structures.