Rich and Dorrey Powers shared on social media that Spencer’s niece, 11-year-old Penny, passed away on Saturday.
“To lose two amazing pups in one week is a level of grief we are not prepared to handle. Rest Easy Sweet Penny. You are with your soulmate Spencer with your frisbees and ball. You are forever in our hearts. Thank you all for your caring about this special duo,” Powers wrote on Instagram.
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Powers have created a GoFundMe to raise money to find a cure for hemangiosarcoma.
Penny’s passing came just eight days after Spencer died on February 17. Spencer was loved by many as the Boston Marathon dog, cheering on runners with a “Boston Strong” flag for the past nine years.