Museum: so we got this weird animal from Madagascar called a tenrec

Taxidermist: ok what does it look like

Museum: well I guess it has big teeth so you should probably make it scary

Taxidermist:

Museum: maybe it’s a bit too much though can you do like, rounder and cuter?

Taxidermist:

Museum: …but not TOO round

Taxidermist:

Museum: …

Taxidermist: …

Museum: you know what?

Museum: just

fuck

me

up

Wow! Genetics can be a crazy force of nature. I had to share this found photo with you guys!

“Frog with eyes in its mouth as a result of macromutation. A macromutation is a mutation that has made a significant impact on an organism, caused by a change in a regulatory gene that’s responsible for the expression of an array of structural genes.

It’s been suggested that the cause of the mutation was the result of a parasitic infection by a trematode worm (Ribeiroia ondatrae). Trematode infections have reportedly been linked to an increasing number of amphibian limb mutations, particularly missing, malformed, and extra hind legs.”

 ATTRITION IN DOGS

I am not a veterinarian. I am not a biologist. I am not a dentist.

I am, however, a comparative anatomy enthousiast and I would love to show you all some of the more interesting dog skulls I have collected.

Above is the skull of an adult male Laekenois. This is a nice example of plain old ‘good, healthy teeth’. You can look at this one to compare the others I’m about to show you with. All teeth are strong, free of plaque, straight,… 


This is the skull of an adult female Siberian Husky. She too still has all of her teeth, no signs of decay and no plaque. But do you notice something different…? See the way her upper canines are worn down…? That’s quite common amongst dogs who have spent a lot of time chewing or pulling on metal bars or wires. Mostly seen in bored or anxious dogs who live in runs or cages.

This is an extreme case of tooth attrition. This is an old shepherd mix. Its teeth are worn down to a very severe degree. The upper front teeth are missing and the bone had already healed. The canines and lower front teeth are almost completely gone. Discoloration and plaque deposits have affected the other teeth. (Stage 3 and 4 of periodontal disease; which could have been prevented)This is the result of a combination of being an excessive chewer and old age.

Awww, time for puppy teeth! This is an Alaskan Malamute pup. This little one is still lacking several premolars and it appears to have a small underbite (which basically means the lower front teeth stick out in front of the upper front teeth) but this can all still change as it would have grown into adulthood and lost its puppy teeth. No reason to worry.


Speaking of an underbite… This is the skull of an adult Pomeranian. They aren’t generally known to have underbites but it can happen. Especially in breeds who have a very reduced snout length. What’s more interesting in this skull is that the third upper premolar (the third tooth from the canine) has turned a full 90° as it grew. There simply isn’t enough space for all the teeth to sit as they are supposed to and, in many small dogs, these overlapping teeth can cause a lot of plaque buildup in the long run.


This old, male Poodle Mix has (as you can clearly see) quite a few missing teeth and porous gums. This is, however, not uncommon. Especially in smaller breeds. The teeth themselves still appeared to be in good condition. Not discolored or infected. Some dental care would have been needed but it would not appear the dog would have been in any major discomfort or pain, despite the way this skull looks. 


This poor old female Beagle had some major dental issues. Her upper molar and a premolar are missing but the bone has already healed, suggesting she lost those teeth a while back. Her lower molar was severely infected, as well as her upper canine. She was diagnosed with osteomylitis, a painful infection and inflammation of the bone marrow and passed away before the treatment was complete. 


Another old dog. This Miniature Poodle also suffered from osteomylitis. He had the same amount of plaque as the beagle but the teeth were still less affected by the disease. Note how the upper hind most molar is ready to fall out at any moment.

That’s all for now!
Hopefully this post has been a little bit educational for some!

-Max

(Edit: The last photo was missing. Added it in.)

3

Another night in the American Museum of Natural History. A burrowing owl and a barn owl. 3 hr total, ballpoint pen.

The barn owl’s shading got away from me a little bit - not sure if my pen flow increased or if I just need to go home and have dinner. Possibly both.