Dogs, vets, and pet-sitting or boarding (Oslo)

We are finally moving to Oslo in January Protected content . We are bringing with us our two dogs and one cat. We will need to find 1) a good vet and either a 2) place to board the dogs or 3) a house/pet-sitter for when we travel. Do you have a trecomendation for any of those things? Our apartment is in central oslo, not too far from majorstuen.
Thank you!