Compassion Over Killing's Powerhouse Team!

Erica Meier
Executive Director

Erica has served as COK’s Executive Director since 2005, after being an active volunteer starting in 2000. Since taking the helm, she’s taken the organization to new heights with continued growth and accomplishments for animals that include ending the egg industry’s use of the misleading claim “Animal Care Certified” and successfully persuading BOCA foods to stop using eggs.

Vegan for 20 years, Erica has been working in the animal protection field since college. In 2013, she was honored with the prestigious Animal Rights Hall of Fame award.

Before working at COK, Erica spent several years as an animal control officer in Washington, DC where she rescued sick, stray, and homeless animals as well as enforced anti-cruelty laws.
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Cheryl Leahy
General Counsel

Since 2006, Cheryl has served as COK’s General Counsel targeting large-scale abuse of farmed animals through proactive litigation and undercover investigations. Her work includes challenging cruel, yet standard, practices forced upon farmed animals as well as the misleading marketing of meat, milk, and eggs often found in grocery stores.

Cheryl received a J.D. from UCLA School of Law and a B.A. from the University of Chicago in Environmental Studies.

She is a member of the District of Columbia, Maryland, and California bars and currently works in COK’s Los Angeles office accompanied by her dog Hermione.
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Lisa Winebarger

After getting her start in Animal Law as a Litigation Intern for COK in 2010, Lisa joined COK’s Legal Department in 2013. She now works to challenge the widespread abuse of farmed animals and egregious agricultural practices through litigation and other legal avenues.

Lisa received her B.A. from the University of British Columbia in Vancouver, Canada, and her J.D. with honors from the American University Washington College of Law.

She is a member of the California and Hawaii bars, and works out of COK’s Los Angeles office accompanied by her rescue dogs, Puna and Kui.
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Chris Lasala
IT Manager

As IT Manager in 2015. Chris manages all of COK’s websites and IT needs as well as providing support to the entire COK team. Chris holds multiple certifications in IT and has worked web development since the late 90’s.

Prior to joining COK, Chris spent the last 6 years working for an NGO documenting the human rights abuse happening in Iran. He was responsible for building and managing the website for the United Nations Special Rapporteur on the situation of human rights in Iran.

Chris is a lover of all animals — however his favorite are cats. He lives with his fiance’ Amie, and sadly at this time they have no cats — although they are looking to change that as soon as possible by adopting a cat and possibly naming him George!
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Mike Wolf
Investigations Manager

Mike became vegan in 2006 after the loss of his dog Curly, and then spent almost 4 years working as an Undercover Investigator with a focus on animal agriculture. His investigations include hog farm suppliers to Smithfield and Hormel, which combined, have resulted in dozens of criminal cruelty charges.

His cases have been featured in several national media outlets as well as multiple books written on the topic. Mike joined COK in 2014 as the Investigations Manager, and he now oversees investigative efforts into meat, dairy, and egg facilities.

Mike also has a strong passion for vegan fitness and hopes to help show how easy it is to gain vegan muscle as a member of PlantBuilt’s Powerlifting team. He shares his home with his wife Lindsay, dog Maddy, and three cats Molly, Boy, and Grey Matter.
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Caroline Donaldson
Office Manager

As Office Manager, Caroline maintains the central COK office and daily hustle-and-flow. Before joining COK, Caroline worked as Office Manager at Active Minds supporting young-adult mental health awareness campaigns, and most recently at a local market proudly pushing vegetables.

She is passionate about healthy eating, animal welfare and social marketing.

She will always ask Santa for a pony.
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Paulette Benjamin
Outreach & Events Manager

Combining her passion for farm animal protection and empowering others, Paulette is excited to join the COK team in DC as the Outreach and Event Manager. Having volunteered for companion animal issues since 2000, farm animals became her passion in 2006.

Helping organize on a grassroots level for several years, she most recently represented COK in the Citizens for Farm Animal Protection coalition this past fall in Massachusetts. With a background in environmental science and aiding the homeless, she brings analytical skills together with compassion for all beings.

She also adores mini snowmen.
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Jonathan Rosenberry
Video Production Manager

As COK’s Video Production Manager, Jonathan creates videos promoting the organization’s mission, including investigation and other campaign-related videos. His love for video started at a young age when filming extreme sports such as skateboarding and snowboarding.

While working on the video team at The Humane Society of the United States as an omnivore, he was inspired to fully embrace a vegan lifestyle in early 2014. After years of professional video production experience, he is very grateful to combine his passion for video with his love for animals and the environment.

In addition to his passion for animals rights, he also enjoys pursuing athletic challenges. His most notable accomplishments are running a 50 mile ultra marathon and riding his bicycle more than 2000 miles from Seattle to San Diego
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Jennifer Mishler
Communications Manager

Jennifer joined Compassion Over Killing as Communications Manager in 2016 and is excited to join the team of strong voices for animals!

Prior to working at COK, she was a writer for and Staff Writer/Editor at Sea Shepherd Conservation Society, and has volunteered in animal and environmental protection since 2010.

Her furry friend Olivia loves to run around the DC office playing, cuddling and offering Jennifer writing tips.
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Patrick Horton
Operations Associate

With a desire to work at the intersections of social and environmental justice, Patrick joined Compassion Over Killing in 2016 as an Operations Associate.

He brings with him a background in project and operations management. He holds an MSc in Violence, Conflict and Development from SOAS, University of London and previously worked for a human rights organization in New Haven, Connecticut.

In addition to his desire to help animals victimized by factory farming, Patrick is an advocate for and lover of pit bulls. He lives in DC with his brilliant wife and nutty pup.
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Elena Johnson
Special Events Volunteer

As Special Events Volunteer, Elena helps plan a variety of events—from fundraisers to volunteer trainings.

Before joining COK, Elena worked on events and educational programs for a national cat protection nonprofit and for a retail corporation. She is now a vegan chef and caterer who uses her knowledge of vegan ingredients to offer cooking demonstrations to the public.

She shares her home with 2 black cats: Buster and Lucy.
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Robin Walker
Special Events Coordinator

With an extensive background in event planning and fundraising, Robin helps coordinate various special events at COK including the DC VegFest and our annual holiday celebration. Robin has been active with COK as a volunteer and team member for several years.

She has also worked at the Washington Humane Society and PETA, and she also currently volunteers with Poplar Spring Animal Sanctuary to help organize the 5K Run for Animals.

Robin shares her home with the sweetest little four-legged dog, Wilma!
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Lara Dalinsky
Graphic Designer

Lara has been designing for COK since 2005, bringing visual awareness and accessibility to the organization’s mission. She lays out Compassionate Action, our member magazine, as well as other printed pro-veg materials. She’s also created logos and developed the visuals for many of COK’s campaigns, collateral, and events including US VegWeek and the DC VegFest.

In addition to being passionate about animal rights, Lara also loves dance, yoga, photography, and travel.

She recently relocated to Seoul, South Korea with her husband and two cats, Isabella and Tasha, where she continues to do design remotely and work on adventures for her online travel magazine, En Route Traveler.
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Hannah Sentenac
Content Writer

A wizard of words, lover of all living things and vegan mac ‘n cheese master, Hannah Sentenac writes content for COK that helps spread the word about the benefits of a plant-based lifestyle.

Also the Editor-In-Chief and Founder of, Hannah’s writing has appeared in Live Happy magazine, the Miami New Times, the Huffington Post,,, and numerous other publications and websites.

She’s obsessed with Cocowhip, Just Mayo and Dandies marshmallows, and spends her free time trekking through the mountains of North Carolina with her rescued chihuahua, Luigi.
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Wilma Jean Walker-Johnson
Chief Happiness Officer

Wilma plays an integral role in sustaining the energetic day-to-day operations at COK. Found as a stray in Prince George’s County, Maryland in 2013, she brings street-smarts, an assertive-looking under-bite and a positively optimistic personality to the team (plus lots of squeaky toys).

Her favorite snacks are watermelon, sweet potatoes and raspberries. Wilma enjoys flopping around the office and begging for belly rubs. And when she’s not spreading joy in the office, you’ll often find her hiking and going everywhere with her mom, Robin.

Olivia Mishler
Chief Cheerfulness Officer

Olivia (Liv) plays a pawsitively pivotal role in ensuring that everyone in COK’s DC office is smiling. She can’t wait to get to work every day – after all, every day is the best day ever. Liv works closely with colleague Wilma Jean, brainstorming ways to make the team even happier.

Liv’s favorite snacks are green beans and apple. She enjoys hopping around the office like a deer, laying on as many pillows as possible, and checking each room to find out what her co-workers are eating. When she’s not at the office, Liv loves to spend time with her friend Mister, who has patiently taught her how to be a cat.


Compassion Over Killing’s Offices

Washington, DC – Headquarters:

301-891-2458 |

Los Angeles, California:

310-217-1519 |