Waco Animal Shelter experiencing increasing number of new animals, forever homes needed Humane Society of Central Texas and last updated 2021-05-03 18:58:36-04 WACO, TX â Every year from May to September the Waco Animal Shelter experiences an increasing number of new animals entering the facility. However, right now the shelter is already approaching capacity. The Waco Animal Shelter has remained a no-kill shelter for nearly 5 years and in the last year, they have continued to take that mission a step further by making sure their animals find forever homes. As the intake number continues to increase, the shelter is at risk of having to make difficult decisions.