Assertion: crate's instinct | /r/CapableOf | keep den clean
Facets:
Source sentences:
text: The age-old theory is that dogs, having evolved to be “den” animals who seek the security of small, enclosed spaces to sleep and hide, will avoid pooping or peeing inside the crate because that would defy an instinct to keep their den clean.
text: In order to take advantage of your puppy’s instinct to keep their den clean, the crate has to be of a certain size relative to their body size.