Vegetable oil is a triglyceride extracted from a plant.
The term “vegetable oil” only refers to liquid at room temperature that only comes from plant oils. If the vegetable oil was solid at room temperature it would be known as vegetable fats.
Vegetable oils are used in various culinary dishes and are often put on veggies or bread before baking.
So can guinea pigs eat vegetable oil at all?
No, they cannot have it at all.
It is actually incredibly bad for them and should be avoided at all costs. Do not give guinea pigs vegetable oil.