Dog crates are a product that hasn’t received much serious design attention. A startup called Diggs aims to change that with their Revol, a well-considered collapsible design that allows multiple access points and easily breaks down for storage:
Here’s a demonstration of the features:
At this point Diggs is taking pre-orders for a small-dog crate only, with larger sizes reportedly in the works. And while they’re targeting canine owners, I’d think the Revol would be great for transporting a variety of animals.