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Updated on September 23rd, 2025
Pet's info: Dog | Mixed Breed | Female | spayed | 8 years and 5 months old | 4 lbs
Why does her blood when ending heat turn darker? Is it because she barely bleeds when in heat so it's just old blood coming out? The picture included was a week ago. It's lighter in color now. It has no smell, she's eating & drinking regularly, very hyper(runs around the whole house), & using the bathroom good too. She's getting spayed this September.
3 Answers

Answered By Dr. Rachel
Veterinarian
Published on June 29th, 2017
Answered By David Elbeze, DVM, MRCVS
Veterinarian
It's not unusual for the blood to turn darker toward the end of the heat cycle. i believe you are making the right choice having her spayed, she is already quite old and in high risk of mammary gland tumors.
2Pet Parents found this answer helpful
Answered By Destini R. Holloway, DVM
Veterinarian
Published on June 22nd, 2017
Yes it is likely this is just old genita blood that is oozing out. As long as she is acting Norma and it doesn't have foul odor to it, and it goes away after a few days, it shouldn't be cause for concern. I hope everything continues to go well for your pet Precious. Take care
1Pet Parents found this answer helpful