Episode 23

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Published on:

28th Nov 2025

How Smart Are Dogs Really? Jennifer Holland Reveals the Science Behind Canine Intelligence

In this episode of Tails and Tones, Mariska Nell sits down with science writer and longtime National Geographic contributor Jennifer S. Holland to explore what it really means to be “dog smart.” Jennifer shares stories and insights from her latest book, Dog Smart: Life-Changing Lessons in Canine Intelligence, including why an estimated 85% of the world’s dogs aren’t pets, how street dogs adapt and thrive, and what search-and-rescue and cancer-detection dogs reveal about canine superpowers. They dive into everyday intelligence—like the quiet genius of a dog waiting at the window—why so-called “bad dogs” are often just misunderstood or under-exercised, how ear cropping and tail docking can impact communication, and why letting dogs sniff, move, and “be dogs” is one of the most loving things we can do. The conversation blends science, personal stories (including Mariska’s Frenchie Piper and Jennifer’s dog Monk), and practical takeaways for modern pet parents who want to better understand and support their dogs’ emotional and cognitive lives.

Guest Bio:

Jennifer S. Holland is a science and nature writer with a long career as a staff writer at National Geographic. Her work focuses on animals, conservation, and the natural world, and she is the bestselling author of the Unlikely Friendships book series, which shares true stories of surprising bonds between animals. Her latest book, Dog Smart: Life-Changing Lessons in Canine Intelligence, examines what it means to be smart in the world of the dog, weaving together cutting-edge research, field reporting, and stories from trainers, working dogs, and beloved pets. Jennifer lives with her dog Monk and continues to write, speak, and share about the rich inner lives of animals.

Takeaways:

  • Dogs are communicators first. Body language, subtle signals, and redundancy matter—cropped ears/tails can limit canine “tools,” so supervise thoughtfully.
  • 85% of the world’s dogs aren’t pets. Street/roaming dogs occupy a valid ecological niche—adaptability is a form of intelligence.
  • Genius comes in many forms. From cancer detection to waiting at the window, “smart” includes problem-solving, emotional attunement, and connection.
  • Training ≠ obedience only. Many “bad behaviors” are unmet needs or misdirected intelligence. Compassionate, consistent training (and the right trainer) changes outcomes.
  • Exercise is non-negotiable. Physical AND cognitive work reduce frustration and destructive behaviors.
  • Let dogs be dogs. Sniffing is learning; exploration builds optimism. Partnership > possession.
  • Talking buttons are a fun extra. Useful for enrichment and cause-effect learning—while we keep prioritizing dog-forward communication.
  • Humility helps. Understanding dogs well can make us better, more observant humans.


Relevant links mentioned in the episode:

Jennifer’s website

Dog Smart the book

Jennifer's Unlikely series books

Jennifer on social: Instagram/TikTok / Facebook

Sign up to our Tails and Tones newsletter here

Sign up to our Tails and Tones waiting list for our first product (Elevated Food System) here

Find Tails and Tones on our socials: Instagram / Facebook / TikTok / LinkedIn / Website


Timestamps to relevant points within the episode:

[00:00]- Intro

[02:00] – Welcome, Jennifer’s intro

[03:40] – Jennifer’s origin story & “why dogs”

[07:30] – 85% of dogs aren’t pets; street-dog intelligence

[10:55] – Monk’s bed-spot trick: everyday problem-solving

[12:48] – Talking buttons: cause/effect & connection

[15:49] – Dogs in MRI machines—how they trained it

[22:00] – Search-and-rescue scent tracking story

[20:15] – Signals, cropped ears, and stepping up for our dogs

[27:57] – “Bad dogs” as misdirected intelligence

[30:01] – Exercise is everything (physical & cognitive)

[31:56] – Responsibility: sniffing, breed needs, partnership

[35:51] – A deeper truth about intelligence & existence value

[39:04] – Signature takeaway: “Let dogs be dogs”

[41:00] – Jennifer's one message to every pet parent

[42:31] – Outro

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About the Podcast

Tails and Tones
Helpful tips, heartwarming tails, and honest reviews for the busy pet parent.
Helpful tips, heart-warming tales, and honest reviews for the busy dog parent — with our first product launching in Q1 2026! (Elevated food and water station)

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After struggling to find sustainable, well-designed options for her own pup—and digging deep into the pet industry during her Master’s in Sustainable Design—Mariska realized she was searching for products that simply didn’t exist.



She realized that if these products didn’t exist yet, maybe it was her turn to help bring them to life.



That mission sparked both the upcoming product line and the creation of Tails & Tones.



Being a dog mom is the best—but let’s be real, it can also be confusing, messy, and a little lonely sometimes. That’s why the podcast was born: a warm, practical corner of the internet for intentional, busy dog parents.



Every Friday, host Mariska (fellow dog parent, dog-obsessed human, and sustainability-driven designer) delivers short, soulful episodes filled with dog-care tips, honest product reviews, inspiring stories, and real-life advice you can actually use.



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About your host

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Mariska Nell

Mariska Nell is a podcast host, pet advocate, sustainability expert, and proud dog mom to her rescue French Bulldog, Piper—also known as the real boss of the house. With a background in design and environmental science, and a Master’s in Sustainable Design focused on the pet industry, Mariska brings heart, humor, and purpose to everything she creates.

She’s the founder and host of Tails and Tones, a soulful podcast for intentional pet parents, where she shares insights, stories, and reviews that help make pet care a little easier and a lot more joyful. She also hosts Mama Earth Talk, where she dives into sustainability topics with changemakers from around the world.

Whether she’s recording episodes, consulting on pet-focused sustainability projects, or out on a walk with Piper, Mariska is passionate about creating a better world—for pets, their people, and the planet.