yes - insurance essential. let me tell you (again from bitter experience), MRI scans are......... expensive. like, "good bike" expensive
in the interests of continued balance - greys can also sometimes suffer from separation anxiety (so do many dogs). think this is because ex-racers are used to having people (trainers etc) round most of the day. in our case, this manifested itself as quite loud howling when left during the initial period after we got her (quite a big issue when you live side-by-side with neighbours in a tenement flat).
we eventually trained this out of her over a course of a few months, using frozen kongs packed with treats and liver paste. this took her mind off our absence at least for the most difficult first 15 minutes