Packaged Facts, a market research publisher, claims that tech-based “smart” pet products had US sales of $400 million in 2017. These products include: toys, collars, leashes, beds, carriers, crates and housing, bowls, feeders, apparel and litter boxes. This list matches up pretty well with our categories, although they don’t appear to include apps and we haven’t discovered any high tech apparel.  You can buy the report for $3,995.