I've always grown up with & lived around dogs. My parents have always had rescue dogs, of all shapes & sizes. I spent a few months caring and housesitting for four dogs late last year, one of which was elderly and on a lot of oral medication, as well as needing regular vet visits & an attentive eye for any changes in her. I have also used eye drops on a young dog during a two week dog sit. I love to run & will happily take your pup out on my run if he/she is up for it! I will also stay in your home and effectively housesit as well if you'd prefer, this can be any duration of time!
And aside from dogs, I've looked after two cats in Bromley who were pretty self sufficient but obviously still needed feeding and watering. I also grew up with cats when I was little, but admittedly dogs are my best friends!