The word shows up on the boarding agreement, so it is worth knowing why it is asked.
Where it appears in your booking
The pet information page of the boarding agreement asks for sex and whether the pet is intact, spayed or neutered. The staff use it to place pets sensibly and to know what to expect. An intact female can come into heat, and an intact male may react to a female in heat nearby. Tell the staff if a female is in heat or due to be.
What it means for the stay
An intact dog follows the same vaccine, age and paperwork rules as any other dog. The age minimum of 16 weeks applies to all pets. Rates are the same, too. Your pet's kennel class depends on size, not on whether he is intact. If your intact female is in heat, read can you board a dog in heat and call before booking.
Why you might hear the word
Vets use intact for the opposite of altered. Licensing uses it too: dog license fees in Solano and Yolo counties are lower for altered dogs, and proof of spay or neuter is requested for the altered rate. The same word covers cats.
See also
Read intact dogs welcome, do you take intact dogs and the spay and neuter entry.
Telling the staff what they need to know
Write the right box on the agreement, and add a note if a female is in heat, has just finished a heat or may soon start. For intact males, mention any history of marking or of reacting to females. Honest notes help the staff place your pet well, and avoid surprises. If you have questions, call 707-678-6600 before you book. The staff will talk you through how the kennel arranges neighbors.
Intact pets are not a separate class of guest. They have the same age rule, vaccine rules and rates.
Licensing and cost
The word matters for the dog license too. In Solano and Yolo counties a license for an altered dog costs less than for an intact dog, and proof of spay or neuter is needed for the lower rate. The boarding rate does not change with that status. More at dog licenses in Solano and Yolo counties.