A lot of pets are being dropped off at animal shelters when their owners are unable to take care of them anymore. It is a bit sad but at least these pets will get a second chance to find a new home.
Source: Give It Love
Some pets are not as lucky. They have the misfortune of having unresponsible pet owners who simply abandon them on the streets. But in the case of Reese, the senior dog was abandoned with a note from her previous owner.