Typically, pet insurance does not include travel insurance for pets by default. However, you can often add this coverage in exchange for a markup on your premium.
Some pet insurance offers include travel medical insurance in their basic insurance premiums. Just note that the travel medical insurance offered by pet insurance providers is not general travel insurance and only covers some hazards (like serious illness, accidents or death of your pet).
You can filter pet insurance offers by the travel insurance coverage provided in the pet insurance comparison.