Quick answer: The best chew for a dog with separation anxiety is a long-lasting, natural chew that keeps them engaged for hours, not minutes. A 2023 PMC study found that long-lasting chews produced the most positive, calm emotional states in dogs during short periods of social isolation, outperforming treat-dispensing toys and interactive devices. Our pick is Fangz collagen chews: 93% protein, 3 ingredients, air-dried for 2 to 4 weeks. A Fangz chew lasts hours at minimum, and a single chew often lasts days to weeks depending on how hard your dog goes at it. Build a Fangz pack and see for yourself.
The first stretch after you leave is the critical window. What happens in those early minutes matters. A chew that lasts 8 minutes doesn't bridge the gap. It buys you a brief respite, then hands your dog back to the void. A chew that lasts hours? That's a different story entirely.
Here's what the research says, which options actually work, and which ones fall apart the moment your dog gets serious.
Does chewing actually help separation anxiety?
Yes, and there is peer-reviewed evidence for it.
A 2023 study published in PMC (PubMed Central, the US National Library of Medicine's open access journal archive) directly tested the emotional impact of different enrichment types on dogs during short periods of social isolation. The finding: dogs given long-lasting chews showed the most positive and calm emotional states compared to dogs given treat-dispensing toys or smart interactive devices (PMC 2023, "Long-Lasting Chews Elicit Positive Emotional States in Dogs During Short Periods of Social Isolation").
The mechanism is not mysterious. Chewing releases endorphins. The repetitive, rhythmic motion is a self-soothing behaviour. And crucially, a chew that requires real effort holds attention. Your dog isn't just consuming it in a few gulps and then pacing. They're working.
The key word in the study is "long-lasting." A chew that's gone in 8 minutes doesn't replicate the result.
What makes a chew good for separation anxiety (the criteria)
Before we compare options, here are the four criteria a chew needs to hit:
- Duration. At least 30 to 60 minutes for a moderate chewer. Longer is better. A chew that's finished before you reach your car is useless.
- Safety for unsupervised use. If you're leaving, you can't intervene. The chew must not present a choking risk, must not splinter, and must not fracture teeth.
- No food-grade artificial ingredients. Anxious dogs often have sensitive stomachs. Adding glycerin, artificial colours, or wheat-heavy fillers to an already stressed gut is a bad call.
- Engaging enough to create focus. Lick mats and puzzle feeders help some dogs. But for power chewers or dogs with genuine anxiety, passive activities don't cut it. Chewing requires physical engagement that lick mats can't match.
Chew comparison: separation anxiety use
| Chew type | Duration (moderate chewer) | Safe unsupervised? | Natural ingredients | Tooth-safe? | Verdict |
|---|---|---|---|---|---|
| Fangz collagen chew | Hours per session; one chew lasts days to weeks | Yes | Yes (3 ingredients) | Yes, softens with saliva | Best overall |
| Bully stick | 30 to 60 min | Generally yes | Yes (single ingredient) | Yes | Good runner-up; shorter duration, stronger smell |
| Yak chew | 60 to 120 min | Risk | Yes | No (pressure-cured, fractures teeth) | Duration good; tooth safety is a genuine concern |
| Deer antler | Very long | Risk | Yes | No (naturally rock-hard, fractures teeth) | Not recommended for unsupervised use |
| Dentastix / dental sticks | 10 to 20 min | Yes | No (rice flour, wheat starch, glycerin per printed label) | Yes (soft) | Too short to bridge anxiety window |
| Lick mat with paste | 5 to 15 min | Yes | Depends on filling | Yes | Good supplement; not a standalone |
| Kong stuffed | 10 to 30 min | Yes | Depends on filling | Yes | Prep required; shorter window |
| Nylabone | Very long | Check size | No (synthetic nylon) | Risk (hard nylon can fracture) | Not a natural chew |
| Pig ears | 20 to 40 min | Yes | Yes | Yes | Shorter duration; high fat |
The pick: Fangz collagen chews
Fangz hits every criterion on the list.
Duration. Made by Helen and John in Brisbane, slowly air-dried for 2 to 4 weeks. That slow drying process creates a density that power chewers can't demolish in minutes. A Fangz chew lasts hours at minimum, and a single chew often lasts days to weeks depending on how hard your dog goes at it across multiple sessions. The PMC finding specifically points to duration as the key factor in supporting calm during isolation. Fangz delivers that. Build your Fangz pack to pick the right size and flavour for your dog.
Tooth safety. Unlike yak chews (pressure-cured to rock density) and antlers (naturally rock-hard), Fangz softens with saliva. It won't fracture teeth. That matters when you're leaving your dog home alone. The last thing you need is a dental emergency on top of an anxiety problem.
Ingredients. Three. Beef collagen, beef gelatine, and one superfood powder (Pumpkin, Beetroot, Spirulina, or Goat's Milk, depending on the flavour). No wheat, no glycerin, no preservatives, no fillers. Anxious dogs don't need more gut stress layered on top.
Protein. About 93% protein, around 1% fat. Virtually no sugar. If your dog has a sensitive tummy alongside their anxiety (common), the clean macro profile matters.
Odourless. Relevant if you're leaving the chew in a crate or confined space. Bully sticks are notoriously pungent. Fangz doesn't smell.
Puppy-safe from 4 months. If your young dog is showing early signs of separation distress, you can start Fangz from 4 months old.
Where Fangz isn't the answer
We'll be straight about it. Fangz isn't the cheapest chew per unit. If budget is the primary driver and duration is less important to you, bully sticks are a decent option. They're single-ingredient, tooth-safe, and most dogs love them. The tradeoff is a shorter session and a stronger smell.
Fangz is also a chew, not a separation anxiety treatment. If your dog's distress is severe (destructive behaviour, self-harm, non-stop vocalisation), a chew is a useful tool in the management kit but it's not a replacement for behavioural work or veterinary guidance. Use it alongside training, not instead of it.
Runner-up: bully sticks
If Fangz isn't available (we do sell out), bully sticks are the honest second choice.
Single ingredient, digestible, no additives. Duration is typically 30 to 60 minutes for a moderate chewer, which is shorter than collagen chews but still meaningfully longer than a dental stick. The main downsides: they smell (strongly), they're higher in fat than collagen chews, and duration drops significantly for power chewers.
Right if you need: a natural, widely available option on a tighter budget.
Falls behind on: duration, odour, fat content.
See our full bully stick vs collagen chew comparison if you want the deeper breakdown.
What doesn't work well for separation anxiety
Yak chews. Duration is good. Tooth safety is not. Yak chews are pressure-cured into rock density and do not soften with saliva. Vet emergency departments report slab fractures from hard chews regularly, and yak chews are among the most cited. Unsupervised use with a rock-hard chew is a risk we wouldn't take. More on this in our piece on whether yak chews are actually safe.
Antlers. Similar problem. Naturally very hard, won't soften, can fracture teeth. Not a good unsupervised chew.
Dentastix and dental sticks. The duration simply isn't there. Most dogs finish a Dentastix in 10 to 20 minutes. As printed on the pack, the first ingredients are rice flour, wheat starch, and glycerin. Not what we'd lean on for an anxious dog with a sensitive stomach. Duration too short to bridge the anxiety window the PMC study describes.
Nylabones. Synthetic nylon product. Not a natural chew. Hard enough to present fracture risk for power chewers. Not our recommendation for unsupervised use.
How to use a chew for separation anxiety (practical setup)
A few tips from experience:
Give the chew just before you leave, not after. You want the chew to be novel and engaging at the exact moment you walk out the door. If the chew's been sitting on the floor for an hour before you leave, it's lost its new-thing pull.
Match size to the dog. Fangz comes in Small (under 8kg), Medium (8 to 15kg), and Large (over 15kg). A Small chew given to a Labrador will disappear too quickly. Get the right size for real duration. Use the Fangz Build Your Pack page to choose size and flavour in one step.
Don't use the same chew every day. Novelty matters for engagement. Rotate flavours (Fangz has four) or alternate with another natural chew type to keep the experience interesting.
Start with shorter absences. If your dog's anxiety is significant, don't launch straight into 8-hour workdays. Start with 15 to 30 minutes, build up. The chew supports the process; it doesn't replace the desensitisation work.
Check the 10% rule. Treats and chews should make up no more than 10% of your dog's daily caloric intake. A Fangz is high protein, low fat, and fairly low calorie relative to its size, but the rule still applies. If you're giving one daily for anxiety management, account for it in the day's total. More on that at our guide to how many chews per day.
Flavours for anxious dogs: which one?
All four Fangz flavours are collagen-based with the same core macro profile. For dogs with anxious or sensitive stomachs, two are worth highlighting:
Goat's Milk: The mildest option. Lower protein (around 82%), slightly higher fat (around 2%), but the creamiest and gentlest on digestion. Good starting point for a dog with a sensitive gut alongside their anxiety.
Pumpkin: Pumpkin powder is a well-known support for tummy health and digestion. Gentle, natural, easy on the gut. A good call if your dog already has a slightly sensitive stomach.
Beetroot and Beef + Spirulina are both excellent chews but are more assertive in flavour. Great options for confident chewers; maybe a second or third trial flavour for a sensitive dog.
The bottom line
The research supports long-lasting natural chews as a tool for managing separation anxiety in dogs. Short-duration chews don't bridge the anxiety window. Hard chews (yak, antler) introduce tooth-fracture risk that compounds the problem. Synthetic chews aren't natural.
A Fangz collagen chew: hours of engagement per session with a single chew lasting days to weeks, 3 ingredients, softens with saliva, tooth-safe, puppy-safe from 4 months, odourless. It's the closest thing to the PMC study's ideal in an actual product you can buy in Australia.
Try a Fangz chew for your dog. We offer a refund if your dog doesn't love it.
Related reading: Best chews for dogs with boredom and destruction problems | The complete guide to collagen for dogs | Best long-lasting dog chews in Australia (2026)
Sources
- Flint HE, Atkinson M, Lush J, Hunt ABG, King T. "Long-Lasting Chews Elicit Positive Emotional States in Dogs during Short Periods of Social Isolation." Animals (Basel). 2023;13(4):552. PMC9951671. Available at: pmc.ncbi.nlm.nih.gov/articles/PMC9951671/
- Veterinary Oral Health Council (VOHC): vohc.org (for dental chew standards and seal-of-acceptance context referenced in companion articles).
- The 10% treat rule is cited by multiple veterinary sources including RSPCA Australia and vet nutrition guidelines; see our article on daily chew quantities for detail.