It's possible the intended word was "un-chinned-snouted," which could describe an animal with a snout that lacks a distinct chin. However, even this is not a standard term in zoology or animal description.
To understand what the writer meant, you'll need more context.
Here are some possible scenarios:
* Typo: The writer might have made a simple typo.
* Made-up term: They might be using a unique term to describe a specific animal characteristic.
* Technical term: It could be a specialized term used within a specific field.
Please provide more information about the source and context of this word to help me figure out its intended meaning.