Cat (Praxeus)

In the early 2020s, the Thirteenth Doctor investigated a talking cat in Ontario. (TV: Praxeus)

Behind the scenes
While not explicitly stated within TV: Praxeus, the talking cat matches the description of a Gallifreyan cat - indeed, on the did-you-know page for Praxeus the BBC America website, the connection was indirectly confirmed, thus meaning that Praxeus references PROSE: The Legacy of Gallifrey, which also established several concepts that made their way onto screen.

When a fan asked to know more about the cat to BBC America Twitter account, they reiterated: "It's a cat and it lives in Ontario." It also confirms that the cat lives in Ontario, not just happening to be there temporarily. One could even imagine that the cat may be a refugee from Gallifrey after the reveal of it's destruction a few episodes prior in TV: Spyfall.