Final answer:
The extracts provided do not directly mention Alexis or a vet break, but suggest a busy environment with animals that may require breaks to manage stress or health.
Step-by-step explanation:
The reasons for taking a break can vary greatly depending on the individual and their circumstances. In the context of the extracts provided, none explicitly mention a character named Alexis taking a break at the vet in the morning. There are mentions of characters involved in veterinary situations and taking care of animals, such as the dogs being walked and brought to a dog hospital. However, if the question about Alexis taking a break in the morning at a vet is hypothetical or based on description outside the given excerpts, it could be inferred that the break might have been required due to a stressful or busy morning, the need to manage personal health, such as a headache, or simply because taking regular breaks is a healthy practice to manage workloads, especially in a demanding field such as veterinary medicine.