After all, it can be tough trying to get each of the 51 penguins at the zoo to take their daily vitamins.
"To get the penguins to actually take their pill, we're a little sneaky," said Mona Keith, lead keeper of the African Savannah and penguin exhibits.
"We take the pill and we slip it just in behind the gills of the fish."
Not just cleaning
Each penguin gets one "pill fish" daily, meaning the zookeepers have to do this 51 times each day.
People rarely go to the zoo to see the zookeepers, and when they do catch sight of them, the staff are often cleaning.
But zookeepers spend quite a bit of time interacting with the species, sometimes administering medication and offering physical conditioning.
'Each has their own personality'
Keith has been with the Calgary Zoo for 33 years and has been working with some of the same animals for 20 years.
"You can't help but to get attached to them."
As part of National Zoo Keeper Week, the Calgary Zoo is celebrating the 44 zookeepers that care for more than 800 animals every day of the year.