Business

Why do dogs wag their tails?

Everyone knows that a wagging tail means a happy pooch, right? Actually, dogs wag their tails to express a range of emotions, and wagging can mean anything from anxiety to joy. 

Along with body language, the tail is how dogs communicate how they’re feeling to us and other animals. Let’s take a look at what it means when your dog wags their tail and how to tell what they’re feeling. 

What does tail wagging mean? 

Dogs are emotional animals and they feel lots of different emotions. This is one of the main reasons why we form such strong bonds with our four-legged friends. 

When you see a dog wag their tail, you might assume that this means they are feeling happy, although sometimes this isn’t the case. When a dog wags their tail, they could be conveying a number of different emotions. They might be feeling happy or excited, or they could be feeling nervous, threatened or anxious. 

Unfortunately, our pooches can’t talk to us to let us know how they’re feeling, so they use their tail movements to give us clues about their emotions. The positioning and speed of their tail movements, combined with their body language, helps to give an idea about how they are feeling. 

If your dog is feeling excited or happy, their tails will wag back and forth enthusiastically, or round and round in a ‘helicopter’ motion. Your dog will likely do this if you’ve been away from them for a short period of time, for example, if you’re returning from holiday, or even just from work. This tail movement is your dog telling you that they missed you and they are really happy to see you again. 

Some dogs move their whole body when they wag their tails, again this is generally a sign that they are happy and pleased to see you. This full-body movement can also mean that a dog is unsure about a situation and they are attempting to communicate that they aren’t a threat. 

If your dog’s tail is relaxed and sitting in a natural position, this means that they are feeling calm and stress-free. 

If your dog’s tail is tucked between their legs it’s normally a sign that your dog or frightened or worried. The tail may still wag in this position, but in this case it is not a happy wag! A stiff tail normally means that the dog is contemplating an aggressive reaction.

How can I tell if my dog is worried? 

If your dog is feeling scared or worried, their tail position won’t be the only way that they’ll let you know. Their body language and expressions will give you an insight into their emotional state. 

They might start to lick their lips or yawn, or they might act aggressively or defensively by growling or flashing their teeth. Keep an eye out for these physical and emotional responses when your dog encounters something they are unsure about.

If your dog starts to display any of these defensive behaviors, calmly remove them from the situation so they’ve plenty of time and space to relax. By being alert and paying attention to your dog’s emotions, you can help to keep them happy, calm and safe.

   

What does the direction of the wag mean? 

Research has shown that dogs wag their tail either left or right to convey how they are feeling. Although it may sound a bit far-fetched,  the research shows that dogs wag their tail to the left to show negative emotions, and to the right to show positive emotions. 

Why tail docking is a problem

Whether your dog has a short curly tail one or a long, swooping one, a dog’s tail is vital to help them communicate. When a dog’s tail is docked, they lose the ability to effectively communicate through it, which as previously mentioned, is a vital method of conveying emotion. 

Docking a dog’s tail is illegal in the UK. Not only is it a painful and unnecessary procedure that hampers their ability to communicate, but it can also affect their balance and their ability to swim effectively.  

Need more info?

Looking for further help and advice on your dog’s behaviour? Contact us to find out more about your dog’s behaviour.

Ellen Whale

Ellen Whale

Patient Care Assistant/ Receptionist
PCA

Ellen joined us in 2026 after previously working in another vet practice and an animal sanctuary.

She loves horses and has two of her own called Molly and Abbie.  she also has four dogs who she enjoys walking in the Norfolk countryside. 

Adri Rossouw

Adri Rossouw

Locum Veterinary Surgeon
BVSc CertAVP (FelMed) MRCVS

Adri qualified as a Vet Surgeon in South Africa in May 1992 before moving to the UK in 1998.  She was partner in a small animal vet practice in Norfolk before retiring in May 2023.  She missed working with animals so now works as a locum part time.  She brings a wealth of experience to the team.  She achieved a CertAVP Small Animal Medicine (feline medicine) certificate in 2023.  She also enjoys orthopaedic and soft tissue surgery. 

Outside work Adri enjoys gardening, cycling and walking as well as being involved in the Gateway Church in Kings Lynn.  Adri has a tuxedo cat called Karolus and the village peacock Bob has claimed her garden.

Helen Manson

Veterinary Surgeon
BVM&S CertVOphthal MRCVS

Helen moved to Norfolk after graduating from Edinburgh Vet School in 2003. After working in practices around King’s Lynn, she joined the practice in 2023.


Helen enjoys small animal medicine and has a special interest in Ophthalmology. Helen gained her post graduate RCVS certificate in Veterinary Ophthalmology in 2012 and offers internal and external referrals for eye cases at the practice.


Outside of work, Helen is kept busy with her three children, Daisy the Labrador and Maggie the cat. She is married to Liam.

Ben Mcdonnell

Clinical Director & Veterinary Surgeon
BVSc, BSc, Cert AVP (GSAS)MRCVS

Following his graduation from Liverpool University in 2008 Ben returned to his roots in Cumbria, where he spent a short period working in mixed practice, before making the decision to work solely as a small animal veterinarian. He moved to Norfolk in 2022, when he joined our team at Swaffham, becoming a clinical director in 2025. Ben enjoys all aspects of first opinion small practice work, but especially enjoys the surgical side of the job and achieved the Royal College Certificate in Advanced Veterinary Practice (General Small Animal Surgery) in 2021.


Outside work Ben is often found exploring the Norfolk countryside and coastline with his son Joey. His other interests include mountain biking, walking, running and more recently paddle boarding.

Emily Neep

Veterinary Surgeon
BVetMed BSc(hons) MRCVS

Emily joined Swaffham Veterinary Centre in 2023, having worked as a vet in Wales. Originally from Norfolk, she was very excited to move back home! She has a keen interest in exotic animal care and also is trained in acupuncture.


In her spare time, Emily enjoys exploring her creative side with various craft projects, from crochet to jewellery making and can often be heard singing along to her favourite musical (much to the nurse’s dismay!). She has always had pets at home, ranging from various cats and dogs to a pet toad!

Liam Manson

Clinical Director & Veterinary Surgeon
BVM&S GPCert (SAS) MRCVS

Liam founded Swaffham veterinary Centre in 2014, having worked in mid-Norfolk since graduating from Edinburgh University in 2003.  He completed a surgical certificate in 2007 and continues to have a keen interest in surgery but does enjoy the variety that a busy first opinion small animal practice gives each day.

Out of work Liam enjoys spending time with his wife and children, who all enjoy travelling in the UK and abroad.  he also enjoys exploring the beautiful Norfolk countryside with his Labrador Daisy.  When given the opportunity Liam is a keen gardener.