I go to the local Albertson's and smile, bat my eyes and remember the names of the butchers there. They get a few cow femurs a week to slice up for people to buy for soup bones. Since I ask regularly (and it took a few weeks for it to work) they always order an extra one for me now. I specifically ask for a "whole cow femur."

I give the femur whole as is or ask them to cut in half for me (or do it at home, but it takes a while) and give half at a time and keep the other half in the freezer. They get chewed on for a few hours, then put in the freezer for the next day. They last for about a week, then I toss them. They ONLY get fed in the crate or backyard 'cause they are messy!!!

Rib bones can work, but mine can splinter them fairly easily so I limit them and watch carefully...

Where are you located in Cali? I ask 'cause I have an antler if you are anywhere nearby (I regularly go from Paso to Ventura along the coast). If not, I have found them online, like e-bay, for fairly cheap as well as dog stores that sell them for a little more specifically for dogs...

ETA: Bullysticks are great for puppies or dogs that are not too serious about chewing, but a chewer will go through them pretty quickly. Mine love them, but I don't buy them because $20 worth of chewies are gone in less than 10 minutes...

Hey Kristi, I am also vegetarian so it took me a while to find out where to get meat stuff

Where in CA are you? There are a few pet supplies near me that sell Primal Instinct (I think) pre-packaged marrow bones. They have all different sizes. My dogs love them. I usually get bison ones. They're in the frozen section.