A little thing like distance wasn't going to keep a miniature schnauzer named Sissy away from her owner.
On Saturday, Sissy escaped from her yard, walked the 20 blocks to Mercy Medical Center in Cedar Rapids, Iowa where her owner, Nancy Franck, has been for the past two weeks, and strolled right through the front door.
Franck has been recovering in the hospital after a cancer-related surgery.
"She missed Mom. That's all I can say: She missed Mom," Franck's daughter, Sarah Wood, told KCRG.
"That was great just being able to see her. That was perfect," Franck said.
In 2013, a scientist told The Washington Post a dog's sense of direction is tied to its sense of smell.
Turns out, a dog's sense of smell is 10,000 to 100,000 times more powerful than a human's.
Franck's family told KCRG while Sissy had never been to the hospital prior to Saturday, Franck works in a building next to the hospital, so it's probable that Sissy followed her scent all the way there.
More from AOL.com:
Hilarious, creepy ad for 'very haunted' computer on eBay goes viral
'Sit and rise' test said to predict your death
February's new moon is both a black moon and supermoon
Thousands mourn loss of California police dog