A baculum is a penis bone, and no, you don't have one. Your dog, however, does. Just to clarify all that up front. Now - let's talk very briefly about Dire Wolf Dick-Bones!
|Not Featured: Ghost's ENORMOUS SCHLONG|
Dire wolves were pretty big, about 41% larger than wolves are today. Their dick-bones, however, were SUPER-SCALED: in some cases 231% larger than wolf dick-bones. These bones preserve pretty well in the La Brea Tar pits - a recent study presented at the Society of Vertebrate Paleontology counted 159 complete bacula. Of this number, 8 showed signs of having been broken and healed during the animal's lifespan, which suggests that doggy style in the Pleistocene was potentially a lot more aggressive than today.
Hartstone-Rose, A., Donadeo, B., Boyde, B., Long, R., Farrell, A. 2013. Broken and Healed Bacula of La Brea: A Whole New Definition of Tough Times! Poster Session II, Society of Vertebrate Paleontology.
Lundy, Kendall. "Morphological Variation of the Baculum in Coyotes (Canis latrans)." Transactions of the Kansas Academy of Science 117.3-4 (2014): 291-294.