Crates, carriers and travel kit, judged on containment, crash data where it exists, and daily use.
A crate does not fix separation anxiety alone. Here is the desensitization protocol that does the work, and how to tell when it needs a professional.
Five carriers judged on the two things that decide the day: whether it opens from the top, and whether anyone has crash-tested it.
There is no mandatory standard for pet travel products, so most of them have never been tested. One non-profit publishes the research, and it is not flattering.
The carrier only appears before something bad happens, so the cat learned exactly the right lesson. Here is how to unteach it, over weeks rather than minutes.
Two measurements, one formula, and the divider that stops a puppy crate becoming a puppy toilet. Bigger is not better here.