{"id":435,"date":"2026-04-01T19:49:00","date_gmt":"2026-04-01T19:49:00","guid":{"rendered":"https:\/\/chabrok.com\/?p=435"},"modified":"2026-04-01T19:49:00","modified_gmt":"2026-04-01T19:49:00","slug":"dead-fox-and-bobcat-carcasses-worry-portola-valley-residents","status":"publish","type":"post","link":"https:\/\/chabrok.com\/?p=435","title":{"rendered":"Dead fox and bobcat carcasses worry Portola Valley residents"},"content":{"rendered":"<p><\/p>\n<div>\n<figure class=\"wp-block-image size-large\"><figcaption class=\"wp-element-caption\">A bobcat with signs of mange was seen in Portola Valley in March 2026. By: Kori-Anne Bagrowski<\/figcaption><\/figure>\n<p>Portola Valley residents say they&#8217;ve seen a disturbing number of dead foxes and bobcats in recent days, leading some to suspect they may have been poisoned by chemicals used to kill rodents. <\/p>\n<p>&#8220;We don&#8217;t know for sure whether rat poison was the cause,&#8221; said Marianne Plunder, chair of the town&#8217;s conservation committee. &#8220;What we do know is that wildlife deaths are on the rise. The challenge is that we have to find animals quickly before they decompose in order to test for cause of death.&#8221;<\/p>\n<p>He added that the town has also seen an increase in rodent populations, especially around wineries and schools. When rodent populations increase, it can be a sign of a decline in natural enemies.<\/p>\n<p>In the past three months, the Peninsula Humane Society has received a total of 12 reports of dead wildlife in the Portola Valley. They were all for small birds, squirrels, raccoons, opossums and deer, communications manager Colleen Crowley said.<\/p>\n<h2 class=\"wp-block-heading\" id=\"h-dying-fauna-of-portola-valley\"><strong>The dying fauna of Portola Valley<\/strong><\/h2>\n<p>A few weeks ago, Portola Valley resident Corian Baglowski found a mange-ridden bobcat in her backyard, which opens to Corte Madera Creek. She said she reported it to experts at the California Department of Fish and Wildlife and the University of California, Davis. Within a week, the bobcat was found dead near her property.<\/p>\n<aside class=\"scaip scaip-1    \">\n\t\t<\/aside>\n<p>Other residents reported to Almanac that they had seen carcasses of wild animals with signs of mange near Windy Hill Open Space Preserve and Westridge Road. <\/p>\n<p>According to the Tufts Wildlife Clinic, mange is a skin disease caused by parasitic mites that causes severe itching, scabbing, hair loss, infection, starvation and dehydration in animals.  <\/p>\n<p>In 2013, Midpeninsula Regional Open Space and CDFW discovered that many bobcat deaths and illnesses were associated with second-generation anticoagulant rodenticides, which are banned in California under the Poison Prohibition Wildlife Act. <\/p>\n<p>Predators like bobcats prey on hundreds of rodents per year. If these prey ingest rodenticides, the toxins can build up in the predator&#8217;s body, weakening its immune system and putting it at risk for diseases such as mange, Midpen said. <\/p>\n<p>Ryan Barber, senior environmental scientist at CDFW, said that while some researchers have found a correlation between scabies and anticoagulant rodenticides, findings across multiple studies cannot conclusively determine whether there is a direct link.<\/p>\n<aside class=\"scaip scaip-2    \">\n\t\t<\/aside>\n<p>According to the 2024 CDFW Wildlife Health Laboratory Pesticide Exposure Report, 77.3% of nongame mammals, including mountain lions, bobcats, coyotes, raccoons, and foxes, tested positive for exposure to one or more anticoagulant rodenticides.<\/p>\n<h2 class=\"wp-block-heading\" id=\"h-school-district-s-rodent-control-efforts\"><strong>School district rodent control efforts<\/strong><\/h2>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" data-recalc-dims=\"1\" decoding=\"async\" width=\"780\" height=\"519\" src=\"https:\/\/chabrok.com\/wp-content\/uploads\/2026\/04\/Dead-fox-and-bobcat-carcasses-worry-Portola-Valley-residents.jpg\" alt=\"\" class=\"wp-image-237407\" srcset=\"https:\/\/i0.wp.com\/www.almanacnews.com\/wp-content\/uploads\/2024\/02\/231205-3-scaled.jpg?resize=1024%2C682&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.almanacnews.com\/wp-content\/uploads\/2024\/02\/231205-3-scaled.jpg?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.almanacnews.com\/wp-content\/uploads\/2024\/02\/231205-3-scaled.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.almanacnews.com\/wp-content\/uploads\/2024\/02\/231205-3-scaled.jpg?resize=1536%2C1024&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.almanacnews.com\/wp-content\/uploads\/2024\/02\/231205-3-scaled.jpg?resize=2048%2C1365&amp;ssl=1 2048w, https:\/\/i0.wp.com\/www.almanacnews.com\/wp-content\/uploads\/2024\/02\/231205-3-scaled.jpg?resize=1200%2C800&amp;ssl=1 1200w, https:\/\/i0.wp.com\/www.almanacnews.com\/wp-content\/uploads\/2024\/02\/231205-3-scaled.jpg?resize=1568%2C1045&amp;ssl=1 1568w, https:\/\/i0.wp.com\/www.almanacnews.com\/wp-content\/uploads\/2024\/02\/231205-3-scaled.jpg?resize=400%2C267&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.almanacnews.com\/wp-content\/uploads\/2024\/02\/231205-3-scaled.jpg?resize=706%2C470&amp;ssl=1 706w, https:\/\/i0.wp.com\/www.almanacnews.com\/wp-content\/uploads\/2024\/02\/231205-3-scaled.jpg?w=2340&amp;ssl=1 2340w, https:\/\/i0.wp.com\/www.almanacnews.com\/wp-content\/uploads\/2024\/02\/231205-3-1024x682.jpg?w=370&amp;ssl=1 370w\" sizes=\"auto, (max-width: 780px) 100vw, 780px\"\/><figcaption class=\"wp-element-caption\">500 buildings of Corte Madera School overlooking Frog Pond. Provided by: CAW Architects<\/figcaption><\/figure>\n<p>Portola Valley School District Superintendent Roberta Zalea said ground squirrels and rats are damaging wiring in staff cars at Corte Madera School. <\/p>\n<p>In January, the district began using bait boxes containing vitamin D3, which is used as a rodenticide, as recommended by a pest control company, and the district also alerted the town&#8217;s Conservation Commission, which found no concerns, said Jeff Miller, the district&#8217;s facilities and maintenance coordinator.<\/p>\n<p>He added that the district only uses pesticides that are permitted under the Healthy Schools Act, which prohibits the use of certain chemicals in schools and child care centers.<\/p>\n<p>Zalea said the district notified people by posting signs around campus 72 hours before the rat poison spraying. The signs caused concern in the community. Following the criticism, the district had removed all bait boxes and used only spring traps as of mid-March &#8220;out of an abundance of caution,&#8221; Miller said. <\/p>\n<aside class=\"scaip scaip-3    \">\n\t\t<\/aside>\n<p>\u201cOur biggest concern is our students and staff,\u201d Miller said. &#8220;Rats do pose a health problem when it comes to schools, so we have to put (students and staff) first. But of course we will follow the law and always monitor.&#8221;<\/p>\n<p>The district is currently exploring alternatives to rodent control that are less harmful to wildlife. <\/p>\n<p>The Nature Conservancy recommends that the first step in pest control should be exclusion and deterrence. Plunder said providing nest boxes and vegetation for birds of prey is a much more effective method of rodent control than poison, as owls or hawks are best used for pest control.<\/p>\n<p>In July 2025, the town began installing barn owl boxes. This project is led by Menlo School fourth-grader Eliza Rowe. <\/p>\n<h2 class=\"wp-block-heading\" id=\"h-how-to-report-a-dead-or-sick-animal\"><strong>How to report a dead or sick animal<\/strong><\/h2>\n<p>If community members find a dead, sick, or injured animal, they can contact both the Peninsula Humane Society and CDFW.<\/p>\n<aside class=\"scaip scaip-4    \">\n\t\t<\/aside>\n<p>When a dead animal is reported to the Peninsula Humane Society, the animal will be removed and possibly examined, depending on the disease outbreak and protocols provided by CDFW, Crowley explained. The agency typically does not accept reports of large mammals, such as adult lions, deer or coyotes. These animals should be reported to CDFW, she said. <\/p>\n<p>  Please contact the Peninsula Animal Welfare Association (650-340-7022, ext.). 603. <\/p>\n<p>To report dead wildlife to CDFW, use the online wildlife mortality reporting system at wildlife.ca.gov\/Conservation\/Laboratories\/Wildlife-Health\/Monitoring\/Mortality-Report. The virtual form asks for details such as the type of animal, location of the body, probable cause of death, and date of death. <\/p>\n<p>For questions about pesticides and regulations or to report misuse, contact the San Mateo County Agriculture Department. <\/p>\n<section id=\"block-24\" class=\"below-content widget widget_block\">\n<h4 class=\"wp-block-heading\">most popular<\/h4>\n<\/section>\n<section id=\"block-23\" class=\"below-content widget widget_block\"\/>\t<\/div>\n<p>#Dead #fox #bobcat #carcasses #worry #Portola #Valley #residents<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A bobcat with signs of mange was seen in Portola Valley in March 2026. By: Kori-Anne Bagrowski Portola Valley residents say they&#8217;ve seen a disturbing number of dead foxes and bobcats in recent days, leading some to suspect they may have been poisoned by chemicals used to kill rodents. &#8220;We don&#8217;t know for sure whether &#8230; <a title=\"Dead fox and bobcat carcasses worry Portola Valley residents\" class=\"read-more\" href=\"https:\/\/chabrok.com\/?p=435\" aria-label=\"Read more about Dead fox and bobcat carcasses worry Portola Valley residents\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":436,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,2],"tags":[1726,1727,107,1725,1721,1722,1723,1729,1724,318,1730,1728],"class_list":["post-435","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","category-wilde-life","tag-bobcat","tag-carcasses","tag-dead","tag-fox","tag-menlo-park-city-news","tag-menlopark-top-post-primary","tag-menlopark-top-post-secondary","tag-portola","tag-ready-to-print","tag-residents","tag-valley","tag-worry"],"_links":{"self":[{"href":"https:\/\/chabrok.com\/index.php?rest_route=\/wp\/v2\/posts\/435","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chabrok.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chabrok.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chabrok.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chabrok.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=435"}],"version-history":[{"count":0,"href":"https:\/\/chabrok.com\/index.php?rest_route=\/wp\/v2\/posts\/435\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chabrok.com\/index.php?rest_route=\/wp\/v2\/media\/436"}],"wp:attachment":[{"href":"https:\/\/chabrok.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chabrok.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chabrok.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}