premise: How to recognize and treat salivary mucocele in dogs<br>Look for swelling of the chin. One of the major signs that a dog might have a salivary mucocele is swelling under the chin. The swelling occurs in the angle of the jaw.
hypothesis: One, but certainly not the only one of the signs of salivary mucocele (a disease that can affect dogs) is a swelling under the chin
reason: a swelling under the chin is a sign of salivary mucocele, so my statement was correct