A pickled cucumber (commonly known as a pickle in the United States and Canada or generically as gherkins in the United Kingdom, Ireland, Australia, and New Zealand).
It is a cucumber that has been pickled in a brine, vinegar, or other solution and left to ferment for a period of time.
This is done by either immersing the cucumbers in an acidic solution or through souring by lacto-fermentation. (source)
Can guinea pigs eat dill pickles?
Unfortunately, they can’t at all. They are far too acidic for guinea pigs to eat and will hurt them if eaten.
A food to avoid feeding them.
For more foods that guinea pigs can and can’t eat, check out our guinea pig food list