On a Friday morning in August at Pioneer Park, dozens of dogs and cats mingled with pet owners from around Salt Lake City. The dogs were barking and the cats were a little jumpy. But, for the most part, the pet owners were happy and relieved. Largely because Ruff Haven, a Utah non-profit was giving out free vaccinations to any pet in need. The event drew many dog and cat owners, who were either unsheltered or in a transitional state of housing.