I worked in the UK with my long term partner who trained as a dog behaviour therapist with my assistance. We walked multiple dogs together, socialising them, usually after stopping certain unwanted behaviors. We had dogs board with us (not in kennels but our own home along with our own pets) and we also stayed over at client's houses to take care of their pets and house sit when they were away. This included all pets as well as taking care of the garden if required.