Many mixed breed dogs are given up simply because of changed family circumstances, and these dogs may have no behavior problems at all. (yourpurebredpuppy.com)
But the pets who need us the most are the seniors, the ones who have ended up in shelters or foster care because of family circumstances. (fourleggedguru.com)
A change in family circumstances including serious or chronic illness, a debilitating injury, temporary or permanent disability, or death in the family. (fhaloanpros.com)