30/11/2025
A forensic effort was carried out to identify the species responsible for the bite marks on a monitoring chew card. Initial thoughts were that a mustelid was involved, and early measurements pointed toward a stoat.
A rapid response followed, extra devices were deployed and existing traps were improved to specifically target and remove the suspected predator. Despite this, no captures were made and motion activated cameras showed no mustelid activity at all.
With that in mind, hedgehogs became the next species worth looking into. There’s very little online about hedgehog bite impressions, so some field research was done during a thermal imaging shooting operation. Photos were taken of the upper and lower jaws of a dispatched hedgehog. Our veterinarian confirmed that the bite impressions on the coreflute chew card matched hedgehog dentition.
Hedgehog teeth are very interesting. The pointed teeth at the front of the upper jaw are actually incisors, not canines.The canines sit further back. The single front lower (number 1) incisors are quite dull which explains the crushing impressions on the reverse side of the card. A stoat would create punctures with the lower canines.The depth to width ratio of the bite is also distinctive, helping confirm the identification.
So, we are now planning a live capture pulse to mitigate the uptick in hedgehog numbers on the special site.
(The dentition skull image key follows)
I = incisors
C= canine
P= Pre molars
M= Molars
The numbers refer to the position from the front to back.