As Japan's population has declined, US pet industry spending has grown, a negative correlation of -0.983 that connects Japanese demographic decline to American pet humanization with the transoceanic melancholy of a chart that notes one society losing people and another compensating with animals. The Japanese do not have children, the Americans have dogs, and the chart treats both choices as measures of the same species figuring out what to care for.
Japan's population declined from about 127 million to under 124 million between 2014 and 2023. US pet spending grew from about 58 billion to over 136 billion. One declines, the other rises. Japan's decline is driven by a birth rate of 1.2 children per woman; America's pet spending is driven by the humanization of animals. Both trends measure different responses to the same modern condition: in Japan, the response is not having dependents; in America, the response is having furry dependents that do not need college tuition.
Ten years of Japan declining and pet spending rising is a correlation that accidentally captures a global trend: developed nations are choosing different forms of care. Japan cares for its elderly, America cares for its pets, and both societies are making choices about dependency that would have baffled their grandparents. The population shrinks, the pet industry grows, and the chart spans the Pacific with the quiet sadness of a species reconsidering its future.
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Want to learn more about why correlations like “US pet industry spending” vs “Japan total population” don't prove causation? Read our guide to statistical thinking.