Your co-worker tells you that she has both a pet snake and a pet dog at home. you are most likely to describe her to new office employees as a

Despite the fact that your co-worker tells you  that she has both a pet snake and a pet dog at home, you will most likely to remember more that she has snake as a pet, because this is not so usual as having dog as a pet. So, you are most likely to describe her to new office employees as a snake owner.