| Official guidance | XS | S |
|---|---|---|
| Recommended weight range | 1~3kg | 3~7kg |
| Width·Length·Height | 5.3 × 1.0 × 1.0cm | 6.6 × 1.1 × 1.2cm |
| Weight per piece | 5g | 10g |
| Calories per piece | 20kcal | 40kcal |
| Number per pack | 30 pieces | 15 pieces |
If it’s 3kg, don’t automatically pick a side
For around 3kg, where the official weight guide meets, check both the actual size and chewing habits. XS is 5.3cm long·20kcal, S is 6.6cm long·40kcal, so there’s a difference. Check current weight, mouth size, tendency to gulp, and previous dental chew experience when consulting about products or with your vet for accuracy.
Three things to look at when comparing sizes directly
- Check thickness as well as length. XS and S differ in width, length, and height.
- Observe how your dog chews and choose a time to watch.
- Check the total daily calories including other treats. Calories per piece differ for S and XS.
WSAVA recommends treats are the right size and shape for your dog and to supervise when they eat chew treats.[2] Giving several small treats doesn’t automatically equal one large treat. Even with the same calories, the actual size and chewing style differ.
Tell them this when consulting
“My current weight is __kg, and the size of dental chew I used to give was __. My dog tends to chew it / swallow it quickly, and today they ate __ of other treats. Which size should I consider, Goodnight Chew XS or S?” Try summarizing it like this. It gives more useful information for choosing the right size than just mentioning the product name and weight.
Can XS be given to all puppies?
You need to check both the size and the recommended starting age. Official guidelines specify not to give it to puppies under 3 months old.[1] Even if your puppy is older, check the dog’s condition and product instructions, and give it under supervision. After choosing the right size, compare package quantity and price to make a purchase that fits your needs.
Frequently asked questions before purchase
For a puppy around 3kg, should I choose XS or S?
Don’t decide based only on the recommended weight range—consider your dog’s chewing habits, product size, and daily treat calories. XS is 5g and 20kcal, S is 10g and 40kcal, so there’s a difference in size and calories.
If the treat is small, can young puppies eat it?
The guidelines restrict giving it to puppies under 3 months. Check the age first, and if it’s okay to give it, supervise while your puppy chews.
Reference Document
Product info checked: September 15, 2026. When purchasing, check the latest detailed description and packaging labeling for the chosen option.
