Pasco city staff will visit Pasco homes from now until the end of February checking for unlicensed dogs.
It's the fifth consecutive year the city has conducted the canine census.
City staff also will bring information about the licensing requirement, spaying and neutering and care of pets during cold weather.
City code requires residents to license dogs older than 7 months. A household is limited to three dogs without a special permit.
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Pasco's license fees are $10 for spayed and neutered dogs and $45 for others and can be paid at the city clerk's office in Pasco City Hall at 525 N. Third Ave., or at the Tri-City Animal Shelter, at 1312 S. 18th Ave., Pasco.
Licenses purchased after the last day of February may cost owners a $10 late fee.