Colo. Rev. Stat. § 25-4-709
If at any time it appears to the department that any pet animal is, or was during its lifetime, infected with a disease dangerous to the public health, it may place an embargo on said pet animal and may trace, or cause to be traced, the whereabouts of said animal and determine the identity and whereabouts of any other animals which may have been exposed to such disease. If the department determines that the interest of the public health requires, it may: Cause any pet animal facility to be quarantined for such time as the department determines to be necessary to protect the public health; prohibit the sale or importation into this state of such pet animals from such places or areas where such danger exists; and require the euthanasia and the proper disposal of infected animals.
C.R.S. § 25-4-709
This section is similar to former § 25-4-710 as it existed prior to 1983.