(Portland, OR)  --  The Oregon Humane Society says it has too many animals and not enough staff.  Shelters across the country are experiencing similar problems.  For some families, inflation is making it difficult to afford a pet.  The Oregon Humane Society is also dealing with summer vacations where foster families are away and can't take pets.  They advise people considering a pet adoption to weigh the costs of caring for the animal before making a decision.