antique Snuff Bottles

Estate sale find, was told these are very old but not sure how to authenticate, am wondering what kind of material these are carved of, they are somewhat heavy, both have some kind of mark on very bottom, both have spoons that i believe are made of bone, not sure what kind of creature is on the bottles, both sides have what could be either a dog, calf, or 3 horned cow/dog, if you have any info on them it would be greatly appreciated, the carvings also have a spot here or there with crack lines in them, the bottles still smell of snuff, they feel smooth or polished/waxy, not sure if its stone or wood? we appreciate any help you can offer!
Mike/Dana