The dog is said to have been in an area of ancient ruins in the city of Chihuahua, Mexico, in the late 1800s. How they actually got there is a mystery that cannot be answered for lack of witnesses, but there is speculation about their descent (1, 2).
Seattle's climate is classified as oceanic or temperate marine, with cool, wet winters and mild, relatively dry summers. The city and environs are part of USDA hardiness zone 8b, with isolated coastal pockets falling under 9a.
The average US city gets 26 inches of snow per year. The number of days with any measurable precipitation is 92. On average, there are 152 sunny days per year in Seattle, Washington. The July high is around 75 degrees. The January low is 37. Sperling's comfort index for Seattle is a 79 out of 100, where a higher score indicates a more comfortable year-around climate. The US average for the comfort index is 54.