Coyote Yipps

Video shows the progression of mange from none in June, and then the case progressing from September through December of 2024.

Just a few days ago, on January 9th, the Chronicle reported that: “Mange outbreak in S.F. coyotes poses risk to pet dogs, officials warn”. Please be informed that mange is transferred through contact, but it has to be through cozying-up or sharing bedding, which our dogs don’t do with coyotes because coyotes and dogs don’t intermingle. A chase, or a nip does not spread mange. I’m surprised that, yet again, both the Chronicle and our City departments have put out sensationalist and fear-mongering information without thoroughly vetting this. This is just more misinformation which will turn folks unnecessarily and wrongly against coyotes.

I’ve spoken to a number of veterinarians and rehabbers who have repeated the same thing to me over and over again. In other words, mange in coyotes poses little risk to dogs.

In addition IF perchance your dog gets mange, it’s easily treated because our pets have ready access to medication and care. This is not true of coyotes. However, I read in Wikipedia that “stressors influence severity and duration of the infection, and that most individuals recover from mange, which helps protect them from future mange infestations. For example, a lactating coyote may look terribly infected with mange, but will likely recover after the pups are weaned and the additional stressors on this coyote are decreased.” 

From my own observations: The early signs of mange might be hard to detect in individual coyotes right off. They include crusty eyes, hairless tails and ears, and a sort of splotchy appearance. This progresses fairly rapidly to more and more hairlessness and crusty patches on the skin unless it is arrested by a prescription drug called Bravecto — this is something that can be given them in the wild without intruding or interfering in their lives, without trapping them or bringing them in. If the case is too far along, even this won’t help, and the animal might need a stronger drug called Ivermectin which MUST be given in two doses and with the right timing to work and normally is administered in a rehab center. Few people know coyotes well enough to notice mange in its early stages, and even now, with extremely furless animals, most people are simply reporting that they see very small coyotes.

I’ve watched a number of cases improve over a six to eight week period of time: the biggest improvement is the healing of crusty eyes and a fuller coat. It seems it takes longer for tail and ear fur to grow back.

You can see an improvement and healing of the crusty skin around the eyes.

We have had few cases at all of mange here in San Francisco since 2002 when coyotes suddenly re-appeared in the city after many years of absence due to our having killed them off. Last year, 2024 there was a sudden surge in the condition. From what I’ve seen, the infected animals seem to have came in from south of the city where we saw the first few cases. One of these individuals made it to a park in the heart of the city where he attempted pairing up with an old female whose mate had left her — possibly because she was getting old — I posted this in mid-January. That guy hung around for several weeks and eventually was chased out, but he was there with the family long enough to spread the mite. In mid-January and mid-February I posted images of this mangy fellow on my Instagram account. Long after he left, come May, the female who he had hoped to pair up with had contracted the mite so severely that I could barely recognize her: see the lower photo on the left below and then pair it up to her healthy look months beforehand. It then spread to four more members of that family. I continued to post about mange through the end of last year — my last such posting was in October.

I noticed that mange almost always spreads to family members: it tends to run in families because these are individuals who indeed do cozy up and share their bedding areas. I know several families where every family member has it. I also have seen individuals spoke off from their families and live alone: I don’t know if these individuals have been excluded from their families because of the mange, or if they themselves, in their very uncomfortable situation, went off on their own to better cope with the condition. There’s also the possibility that their leaving had nothing to do with mange. Those that are off on their own are yearlings whose internal call to disperse may have pulled them away from those families. But these individuals are hanging around the periphery of their birth territories for longer than I have usually seen.

So I know of four families that have passed the mite between themselves. But there are families that, so far, knock-on-wood, seem to be totally unaffected by it. In the past we’ve rarely if ever seen mange here in Francisco. Of the individuals I saw, I did not know who they were (they were not members of the families I had mapped) and they were soon gone, leading me to believe that they were dispersing individuals that made it into the city from the south, and then left again once they could not find territories here. It never spread in the city until last year, 2024.

See my previous posting in October: https://coyoteyipps.com/2024/10/03/mange-cases-are-growing-in-san-francisco/

Article describing mange: https://dfwurbanwildlife.com/2019/11/07/chris-jacksons-dfw-urban-wildlife/why-its-challenging-to-treat-coyotes-with-mange/

Instagram posting on mange: [https://www.instagram.com/p/DD5EFQSRhhB/?img_index=1]

Online Treatment of Mange (check your local area for protocol and guidelines): https://owl-online.org/wp-content/uploads/2020/10/Treating-Sarcoptic-Mange-in-Coyotes-and-Foxes.pdf

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© All information and photos in my postings come from my own original and first-hand documentation work which I am happy to share, with permission and with properly displayed credit: ©janetkessler/coyoteyipps.com.