That they do! A great deal of mammals have them with the exception of ungulates, cetaceans, marsupials and a few others. Humans don’t have them but great apes do.
And I recently learned that many female mammals have their own genital bones called baubellums or os clitoridis!
The more you know!
There’s a mnemonic for remembering which animals have bacula:
Primates - NHP (Adam used his to make Eve)
Rodentia - Rodents, though not rabbits
Insectivora - moles, shrews, hedgehogs
Carinvora - bears, cats, dogs, pinnipeds, raccoons, otters, weaseals, etc
Chioptera - bats
From the fabulous Mr. Oosik himself! This is super helpful but also very beautiful and hysterical.
Staffordshire Bull Terriers were historically and still are used for dog-fighting, ratting, badger-baiting, and hunting foxes in the UK. In North America we most often see the show-bred Staffs and not the lean, game-bred, working type of Staff. Staffs tend to be extremely small-animal aggressive and dog-aggressive (though the dog-aggression is not common in show-bred Staffs because they have not been bred for it).
"Working" Staffs look very much like APBT.
The way that I tell these dogs apart from APBT is that they’re obviously quite smaller and they tend to have sort-of big heads compared to their bodies, lol (like show-bred Staffs, but leaner and less compact). Compare the appearance of the dogs above to this show-bred Staff below:
Staffs are the original “pit bull” and so they maintain many of their terrier traits; they’re small, they have a very “baby-like”, cute face, they have high-set ears, large eyes, a round head, and they’re extremely fast and agile. Compare the Staff with the APBT..
American Staffordshire Terriers were once bred for dog-fighting, but this is before dog-fighting was banned and before show-breeding the AmStaff really started rolling. The AmStaff has not been fought in the pits for as long as the APBT, and so is not very dog-aggressive anymore. Most AmStaffs today are bred and owned by dog showers or pet owners, because of this they are not game like the working SBT or APBT are.
American Staffordshire Terriers look similar to the APBT but are much more… “manufactured”, is the best way to put it. They don’t look very natural like the APBT does, and this is due to the standards set by the AKC for that breed. This results in the AmStaff having a very solid, square, blocky appearance. Some are a little thinner than others but for the most part they generally look the same.
Note the wide chest, short body, thick neck, and very square head.
American Staffordshire Terriers are most commonly cropped very long and this is usually a good identifier of their breed if one were to phenotype them. Some gamebred AmStaffs resemble APBT and their ancestors more than the show-bred dogs:
Compare the body, head, and neck of the American Staffordshire Terrier to that of the APBT:
… and then to the Staffordshire Bull Terrier and the difference is quite glaring.
Hope this helps! :)