The Boulder Police Animal Protection Unit and the Boulder Valley Humane Society Vet Clinic offer low-cost vaccinations and licensing at the Valmont Dog Park on Saturday, April 28, 11 a.m. to 1 p.m. Rabies, DHPP and FVRCP vaccinations cost $10 each, payable by cash or check only. Vaccinations are given on a first-come, first-served basis. All dogs must be leashed and all cats must be in carriers. 5275 Valmont Rd., Boulder.