As Mick mentions in his remark, "to deem in good shape" is a little bit aged-fashioned although not, I do think, more than enough that you mustn't learn the way to use the idiom. I would not simply call it "Victorian" English, as it's a phrase that sees frequent use https://gunnerhdxpg.boyblogguide.com/35685808/the-ultimate-guide-to-how-to-take-care-of-a-cat-uae