Description
The 4-7" Thick Curly Spring is where the two performance variables that extend bully stick sessions — cross-section density and geometric grip interruption — work together in a single compact format. The thick cross-section (Select-to-Jumbo diameter range, 0.75–1.25") means each bite encounters substantially more resistance than the Standard Curly Spring. The curly coil means the dog must reposition at every bend, adding the same 15–25% session extension that shape geometry always delivers. These two factors compound, not add: a thick straight stick lasts longer than a thin straight stick. A curly stick lasts longer than a straight stick of the same diameter. A thick curly stick lasts longer than both. This is the formula.
The 4-7" Thick Curly Spring solves a specific problem: the dog that has graduated beyond the Standard Curly Spring (finishes in under 15 minutes) but whose owner wants to stay in the shaped-stick format rather than moving to a longer straight stick. For English Bulldogs in the 40–55 lb range, Border Collies with moderate-to-heavy chewing intensity, Standard Schnauzers, Corgis with strong jaw muscles, American Bulldogs on the smaller end, and active medium mixed breeds — this is the compact high-resistance shaped format that matches their jaw strength and keeps them engaged for 30–60 minutes without the longer footprint of a 12-inch straight stick.
The compact format also has practical advantages: it travels easily, takes less storage space, and works well in confined environments (car back seats, crates, kennels) where a long straight stick would be awkward. A thick coil spring is one of the few bully formats that a dog can effectively work in a crate without the stick extending beyond the crate walls or getting wedged. For dogs that travel frequently with their owners, the Thick Curly Spring is the format that delivers real session duration in a compact, portable form.
Why density and shape compound rather than add: At Select-to-Jumbo cross-section, more pizzle material is present per bite — the dog works through a denser cylinder. This alone would extend sessions. But at that diameter, the dog's jaw can also fully encircle a thinner straight stick and grind it quickly end-to-end. The thick coil prevents this: the dog cannot establish the stable lengthwise grip that enables rapid consumption because the coil geometry constantly disrupts orientation. The result is that the density provides resistance, and the coil provides repositioning simultaneously. Neither alone produces the same outcome. For moderate-to-heavy chewers who demolish standard curly springs in under 15 minutes but still need a compact, odor-free indoor format, the Thick Curly Spring addresses both dimensions of the problem.
Why Border Collies and English Bulldogs Specifically Benefit from This Format
Border Collies are in the top 3 most cognitively active dog breeds. Their enrichment needs go beyond physical activity — they require mental engagement to prevent destructive behavior and anxiety. The thick curly spring provides both physical chewing resistance appropriate for their jaw strength (35–55 lbs, moderate-to-heavy chewing) and the problem-solving element of figuring out grip and advancement on an irregular helix. Border Collies that engage inconsistently with straight sticks — working for a few minutes, walking away, returning — typically engage straight through on a thick curly spring because each repositioning event is a fresh problem that demands cognitive attention. The session functions as enrichment, not just chewing.
English Bulldogs have strong jaw muscles relative to their body weight — they are routinely in the top 10 breeds by bite force per pound. Their brachycephalic anatomy means they cannot take long, deep bites, but they apply strong lateral compression. The thick curly spring cross-section (0.75–1.25") matches their jaw strength with real resistance per bite. The coil's natural size and compact form fit their shorter jaw geometry better than a long, straight stick. And the odor-free processing makes indoor sessions manageable in households where Bulldog breathing already contributes to ambient noise and smell. For Bulldogs, always supervise completely and provide water — their narrower airways make chewing sessions more demanding than for other breeds at the same Weight.
Chew Time by Dog Weight
| Dog Weight | Chewer Type | Est. Session | Action |
|---|---|---|---|
| 25–40 lbs | Moderate–Heavy | 35–55 min | Ideal — stay here |
| 40–55 lbs | Moderate | 30–50 min | Good fit; 9" Curly for more Length |
| 55–65 lbs | Moderate | 22–38 min | 9" Curly or 6" Jumbo Odor-Free |
| Any | Power | Under 15 min | 6" Monster Jurassic straight stick |
Nutrition & Sourcing Specs
Nutrition Per Spring
| Crude Protein | ~86% |
| Calories per spring | ~85–115 |
| Fat content | Low |
| Ingredients | Beef Pizzle Only |
| Grain-free | Yes |
| Digestibility | 100% digestible |
Sourcing & Processing
| Beef source | Grass-fed, free-range |
| Hormones/antibiotics | None |
| Processing | Extended oven-baked, odor-free |
| Chemical additives | None |
| Rawhide-free | Yes |
Frequently Asked Questions
Same helix geometry and odor-free processing. The 4-5" Standard has a thinner cross-section (Standard range: 0.5–0.75") — appropriate for light-to-average chewers 10–35 lbs — and gives 20–45 minute sessions. The 4-7" Thick has a larger cross-section (Select-to-Jumbo range: 0.75–1.25"), longer total compressed Length, and approximately 85–115 calories vs. 55–75 for the Standard. It is the step up for dogs that finish the Standard Spring in under 15 minutes and need more resistance while staying in the shaped format. The 4-7" Thick bridges the gap between compact curly springs for small dogs and full-size straight sticks for medium dogs.
Yes — one of the best compact indoor formats for moderate-chewing Border Collies 35–55 lbs. Border Collies respond strongly to novelty and problem-solving. The thick coil provides real resistance for their jaw strength, and the helix geometry demands active cognitive engagement — figuring out grip and orientation at each repositioning event. For Border Collies showing reduced enthusiasm for familiar straight sticks, the Thick Curly Spring consistently produces more intense, sustained session engagement. Expect 35–50 minutes for most moderate-chewing Border Collies. Use as a rotation piece with straight sticks to maintain the novelty-engagement benefit over time.
For a 45 lb moderate chewer, both deliver broadly similar session times (35–55 minutes). The 6" Jumbo straight stick provides consistent diameter resistance in a linear format — familiar and reliable. The 4-7" Thick Curly Spring provides the same density at a shorter footprint, in a helical format that forces repositioning and delivers novelty-engagement benefits the straight stick cannot. For the everyday rotation chew, the 6" Jumbo is reliable. For the variety session that resets engagement and adds enrichment value, the Thick Curly Spring is the format. They serve different purposes in the same rotation for the same dog.
Instructions
Feeding Instructions :
Please monitor your dog while feeding these gourmet natural treats, they are fully digestible however, please always provide a fresh supply of drinking water for your pup.
Recommendations:
Store your bully sticks in the original zip lock bag under cool conditions