Denver City Councilwoman Kendra Black was behind the push to ban the procedure.
The ordinance is effective immediately.
Declawing occurs in a procedure known as onychectomy.More news: United Nations adopts Olympic Truce for PyeongChang Winter Olympics
Declawing removes portions of a cat's paws to prevent the growth of claws.
"A decision to declaw a cat is affected by many human and animal factors", said Andre, a practicing veterinarian.
Kirsten Butler, a veterinary technician, said she no longer participates in the procedures.
Alternatives to declawing include regular trimming of cat's claws, stable scratching posts around the home, soft plastic caps for the cat's nails and a special tape that can deter cats from scratching furniture.More news: Taylor Swift's 'Reputation' sells a million copies in four days
Vets say cats who are declawed are more likely to exhibit bad behaviors and eventually cause owners to give up on their pets.
Denver joins San Francisco, Santa Monica, Beverly Hills, Berkeley, Culver City and Burbank, which have all enacted similar bans.
The ban, which covers procedures called onychectomies and tendonectomies, would apply only within city limits, leaving suburban veterinarians free to offer elective declawings to Denver pet owners.
Jennifer Conrad, who pushed for the first USA declawing ban more than a decade ago, in West Hollywood, founded the Paw Project. Declawing bans are also common in most of Europe.More news: European Tour Fantasy Golf Picks & Predictions
- Dallas Cowboys Rumors: Latest Injury Updates on Sean Lee and Tyron Smith
- Why? Markiya Mitchell Rochester mom drowns baby son
- Martin O'Neill: Republic of Ireland manager to discuss future
- Diamondbacks' Lovullo chosen as NL's top skipper
- Activision Blizzard, Inc (NASDAQ:ATVI) Cut to "Sell" at Vetr Inc
- Politics Buhari Snubs Guard of Honour at Ebonyi Govt. House
- Braxton Beverly cleared to play immediately for NC State
- Eve Officially Joins 'The Talk' on CBS
- Rose McGowan Surrenders on Felony Drug Charge Warrant
- Missed opportunity? The Putin-Trump summit that wasn't