Before putting ThunderShirt on your dog for the first time, offer a small food treat to your dog using the folded ThunderShirt as a "plate". Dogs typically become more comfortable and trusting of something that "brings" them food or anything that they associate with food. So this is an easy little trick to quickly create a positive association with ThunderShirt for your dog.
Next, simply follow the "Fitting Instructions." Leave ThunderShirt on for 5-10 minutes. Following these simple instructions allows you to learn exactly how to use ThunderShirt while the dog is calm and helps to avoid the risk that she might begin to associate ThunderShirt with what bothers her. It can also be beneficial to put ThunderShirt on every 4 to 8 weeks in the absence of anxiety.
|Size||Pet Weight||Chest (Most Important)|
|XX-SMALL||up to 7 lbs||9-13 inches|
|X-SMALL||8-14 lbs||13-17 inches|
|SMALL||15-25 lbs||17-21 inches|
|MEDIUM||26-40 lbs||21-25 inches|
|LARGE||41-64 lbs||25-30 inches|
|X-LARGE||65-110 lbs||30-37 inches|
|XX-LARGE||111 lbs and up||37-50 inches|
Please make sure to measure your pet for the best possible fit. If your pet measures between two sizes, we advise ordering the larger of the two.