What you think it means: It’s fair to assume that if an animal is being grass fed, they have access to a pasture full of lovely green grass.
What it actually means: The term “grass fed” on the label, does not necessarily mean that the animal was kept outside, nor does it guarantee that the animal ate grass its whole life. There is not even that much clarity around how much of the said animal’s diet was grass.
Take away: Unless explicitly stated, grass-fed does not equate to free-range or even that the animal had access to the outdoors, unless explicitly stated. Even when the grass-fed label is warranted, it is not clear how much of an animal’s diet was grass or if was given grass its whole life.