Step 1 : Introduction to the question "6. Which of the following can make a hotspot appear?"
...1. A collar left on after getting wet. 2. Fleas or any insect that can inflict a bite. 3. An allergen. 4. All of these. Depending on the dog, any of these can cause a hotspot. The more susceptible a dog is to getting a hotspot, the more likely it is to acquire one from these circumstances. Any irritant on the dog's skin that may cause constant biting (such as insect bites or allergens) can also develop into a hotspot.