Trixie the Akita’s comfort range as calculated by BSCUIT is relatively broad due to her physical features. Akitas are not brachycephalic which mean they don't have any diffituly breathin. Trixie is a healthy weight for her age, which happens to be fairly young. And, as Akitas aren’t toy breeds, she is therefore more adaptable to different temperature ranges than other breeds may be. Because Trixie is a northern breed with a fairly thick double coat she's much more comfortable in cold temperature than other dogs but may have trouble adapting to warmer temperatures.
As a Yorkie, Susan is considered a toy breed, which have a more difficult time adjusting to different temperatures than larger breeds, and especially colder temperatures. Yorkies are also brachycephalic, which means that her nose is flatter than other breeds’ noses and she has a harder time breathing and staying cool in warmer. Also Susan is also upper-middle-aged and potentially overweight for her particular breed, both of which make it harder for her to adapt to temperatures outside of her narrow comfort range.
Brachycephalic dogs have flat faces that make it much harder to breathe in most conditions. This is especially problematic in warm weather when it's harder for brachycephalic dogs to pant to cool down. BSCUIT looks at whether or not a dog is brachycephalic to evaluate their ability to be comfortable in warm weather.
Northern breeds and other dogs with thick coats are specially adapted to cold environments and can have a hard time being comfortable in warm environments. However these dogs are especially well suited for cold environments and be comfortable in temperatures that woudl be much too cold for other breeds. BSCUIT takes the dog's coat lenght into account when estimating a dog's comfort range.
Larger breeds are generally better adapted to cooler environments while smaller breeds are generally better adapted to warmer environments. BSCUIT uses a dog's size to estimate which environment they're better adapted to. Moreover, overweight dogs have a harder time cooling down in warmer temperature so BSCUIT uses data about every breed to know if a dog is overweight.
Toy breeds are adapted to warm environments and can have an especially tough time staying comfortable in warm environments (which is why you often see chihuahuas wearing sweaters in cool weather). BSCUIT considers whether or not a dog is a toy breed in determining a dog's comfort range.
A dog's age can affects their overall health. Puppies (dogs under 6-months old) and senior dogs (dogs over 7 years) old have a harder time staying cool or warm in temperatures outside of their comfort range. BSCUIT considers a dog's age when determining a dog's comfort range.