If you have pets, they live in the house too.
Where does pet food go? Bowls? Leashes? Medication? Grooming supplies?
Cats need a litter-box location with privacy, ventilation, cleaning access, and enough separation from food areas.
Dogs may need a fenced yard, dog door, wash station, towel storage, or durable entry flooring for muddy paws.
Flooring choices can matter because some materials handle claws, water, hair, and accidents better than others.
Pet doors affect security and weather sealing.
Outdoor access affects landscaping and fencing.
Pets may not be the primary architectural clients.
But if you ignore them, they will redesign parts of the house themselves.