During Adopt-a-Senior-Pet Month, the organization is offering special discounted adoption fees through the end of November, and those who are 65 years and older will get any senior pet at half-price.
Discounted fees are $90 for cats, and $135 for dogs.
"We encourage anyone looking for a new pet to follow (Obama's) lead and adopt anew loving companion from your local shelter," Mim Carlson, Berkeley-East Bay Humane Society Executive Director, said in a statement.
Adopting senior pets from shelters can help reduce pet overpopulation, the organization said. Mature pets have also already gone through potty-training stages.
Berkeley-East Bay Humane Society also has special needs pets that need new homes. Two cats, Bliss and Blossom are sisters that were born with eye defects. Bliss needs a daily artificial eye lubricant applied, and Blossom's eye problem was correct with surgery.
A third cat, Cinnamon Buns, has a mild heart murmur.
The adoption fee for any of these three cats is reduced to $50.