Hmmmmm. I actually have first hand knowledge here.
My very first job ever was working in my family owned dog kennel.
I know this is a little gross, but will you be shoveling their kennel runs? Because that can be pretty heavy and demanding work. I remember being sore the next day at times. Also, will you be carrying their water buckets back and forth, or do you simply run a hose or facet to their water buckets? And, how big is the kennel? How many runs are there?
My family kennel held up to fifty dogs. I would say if you were scooping all of those runs that would be a decent workout for the day.
But, if they've got a hose out cleaning system for the runs (I *am* assuming the runs are concrete) then it may not be as much of a workout as you would like. I'd wear a pedometer and see how much you're moving. It's definitely a lot of movement which is never a bad thing. And, back when I worked the kennel I was definitely skinny as a rail!
However, none of it is going to get your heart rate pumping to where it should be for cardio benefits. So, ideally you would still fit in some cardio time. Are you in charge of exercising the dogs? Can you put them on a leash and run them? My kennel was in the country and we whistle trained the dogs. They came back on two blows so the exercising them part was simply opening one run at a time and giving the dog 10 minutes of free time. (We were surrounded by farmland.) But, if this is a kennel where people pay you to keep their dogs I would suspect they must be exercised on leash. That gives you some serious cardio opportunity.
It all depends on exactly what you'll be doing.
Wow, a receptionist at a dog kennel. I'm getting old. That was called our house phone when I was a kid!