Why Animals are in Shelters
Dogs:
1. Moving (7%)
2. Landlord not allowing pet (6%)
3. Too many animals in household (4%)
4. Cost of pet maintenance (5%)
5. Owner having personal problems (4%)
6. Inadequate facilities (4%)
7. No homes available for litter mates (3%)
8. Having no time for pet (4%)
9. Pet illness(es) (4%)
10. Biting (3%)
Cats:
1. Moving (8%)
2. Landlord not allowing pet (6%)
3. Too many animals in household (11%)
4. Cost of pet maintenance (6%)
5. Owner having personal problems (4%)
6. Inadequate facilities (2%)
7. No homes available for litter mates (6%)
8. Allergies in family (8%)
9. House soiling (5%)
10. Incompatibility with other pets (2%)
     The majority of the surrendered dogs (47.7%) and cats (40.3%) were between 5 months and 3 years of age.

The majority of dogs (37.1 %) and cats (30.2) had been owned from 7 months to 1 year.

Approximately half of the pets (42.8% of dogs; 50.8% of cats) surrendered were not neutered. Many of the pets relinquished (33% of dogs; 46.9% of cats) had not been to a veterinarian.

Animals acquired from friends were relinquished in higher numbers (31.4% of dogs; 33.2% of cats) than from any other source.

Close to equal numbers of male and female dogs and cats were surrendered.

Most dogs (96%) had not received any obedience training.
800 dogs and cats are put down every HOUR in the U.S. becuase of lack of homes.   It is not the animals fault.  Many people surrender their animals to the shelters because of many reasons.  Here are the reasons that were posted on Petfinder.