pica, pika

Pica or pica means a craving for something that isn't food; an appetite for chalk, clay, dirt or some other substance --
Pica is a response to anemia or malnutrition.
The clay-eating, or pica, is a symptom, not a disease.

Pica may also mean, to a printer, a kind of type, or the measure of its depth, one-sixth of an inch --
As a unit of measure, pica may still be used to check the size of a font.

Pica may also mean the type used in some typewriters--
Typewriter pica means 10 characters to the inch.
 
Pika or pika ( rhymes with pica ) means a small wild animal related to a rabbit --
If it looks like a small, round-eared bunny, it may be a pika.
The pika is taking grass back to its home in the rocks; he's storing it up for the cold weather.

Now that you know that, you can say --
"She was in the yard, scooping up some dirt to feed her pica, when she disturbed a pika in its burrow."