Conn. Gen. Stat. § 29-108g

Any agent or officer of the Connecticut Humane Society may lawfully take charge of and humanely destroy, or cause to be humanely destroyed, any abandoned, lost, strayed or homeless animal or animal unsuitable for adoption in his charge if upon examination a licensed veterinarian certifies, in writing, or if two persons called to view the animal in the presence of an agent or officer of the society find that the animal is injured, disabled or diseased past recovery, infirm or unsuitable for adoption, or if the owner consents in writing to such destruction. In the absence of such certification or finding or redemption by the owner, the society may, after five days, humanely destroy any animal in its charge pursuant to this section. In lieu of such destruction or redemption by the owner, the society may, in its discretion and without liability, deliver such animal, after five days, to a person other than the owner.