Bull Terrier (Canis Familiaris)
Bull Terriers are a medium sized working terrier breed that Originates from Great Britain. It came from combining Bulldogs and an extinct breed, the Olde English Terrier. They were bred for bull baiting, and are now commonly bred as companions and for potential guard work. They’re an easily identifiable canine, both in life and death, and should be easy to spot.
BT’s generally weigh 50-70 pounds, with some change on either end. This can affect the size of the skull, at least slightly. They’ve got large heads, though a lot of that bulk is muscle. The skull itself is going to be dense and heavy. While measuring them is awkward, the sixty pound example skull measures 9 inches long. You’ll see a difference of a few inches depending on the weight differences.
The most prominent, obvious feature you’re going to come across is the incredible roman nose that these dogs have. The degree will vary depending on the dog and the lineage, but the roman nosed feature will be present in any bull terrier you come across.
With such an intense roman nose, these dogs tend to not have ‘traditional’ stops. Showline dogs will have less of a stop, as the roman nose is a breed standard and is bred for. Working line dogs will potentially have more of a stop, since it’s not necessarily what the focus of the lineage is. Regardless, you’ll see the roman to some degree.
Another big difference between working and showline is their body build. Showline dogs seem to be smaller and heavier, where the working line will be slimmer and taller. This won’t lend to identifying the skull, but it’s interesting to think about.
From above, BT’s are tapered from the muzzle to the back of the arches. They aren’t excessively blocky, despite their body build. Their cranium is narrow and rectangular in shape, much like their muzzles. The widest part of their head is going to be the back of the arches.
The eyes are another clue, beyond the roman nose. They’ve got small, oval shaped eyes that are set wide apart on their face. The small eyes are made to look even smaller, as their zygomatic arches are very broad.
The nasal opening will be flattened against the end of the muzzle because of the degree of the face tilting. The incisor beds may stretch out a little further than the tops of the nasal bridge, but it’ll be nearly flat if not totally flat. They’ve got relatively small noses in life, so the opening itself won’t be as large as say a GSD’s.
From below, the muzzle will form a round triangle, though the canines and incisors are going to widen out the top. The cranium will still appear thin from the bottom, and will form a big rectangle with the arches.
The lower jaws are also very broad and stay consistently shaped up until the incisor sockets. It’s interesting to see that they don’t taper to a sharp and sudden point. It’s typical of ‘bully’/molosser breeds, but are more likely the heavier the dog may be. A 70 lb Bull terrier may have a thicker lower jaw than a 50 lb Bull Terrier.
Another interesting trait to look at is their teeth. Like many bulky terriers, they have large teeth; And like with many shorter or strangely faced dogs, there can be a bit of teeth crowding. Teeth can be slightly turned and overlap due to the short, slanted muzzle. Their incisors are unlike the molars and are actually slightly spaced out.
So all in all, you’re not going to need much beyond the roman nose to really identify these dogs, but the extra traits are good to look at just in case you’re confused. Small eyes, wide jaws, big teeth, and so on. There are plenty of references available online to look at, so make sure to use them!
Good luck and happy identifying!
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