Tool Uses Monte Carlo Simulation to Reveal True Lifetime Cost of Owning a Dog

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A developer has built a web tool that estimates the lifetime cost of dog ownership by breed using a Monte Carlo simulation of 10,000 simulated dog-lifetimes per breed, totalling 300,000 lives computed in Snowflake SQL. Unlike typical articles that offer a single average figure, the tool displays a full probability distribution, highlighting the financial tail-risk most owners overlook. Among its findings, Golden Retrievers and Labrador Retrievers rank as the costliest breeds, with Golden Retrievers carrying nearly a 1-in-5 chance of exceeding $40,000 in lifetime costs, largely due to cancer risk. The tool also includes an insurance scenario lab with adjustable deductibles and coinsurance sliders, an adopt-versus-buy toggle, and a breed cost leaderboard. All figures are presented in uninsured, pay-as-you-go US dollars and are accessible via a live Streamlit app.

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