Upon entering Peru keep in mind that:

You have to present to the Immigration officer your International Embarkation/Disembarkation Card (given to the traveler in the airplane or at the Immigration Stand in the border area you are coming through). Keep the card, since you will have to turn it in when you leave the country. If you lose it you will have to pay a fine equivalent to US$ 4,00.

Customs officers will give you a form for you to declare any goods subject to customs duties you may be bringing in. If none, specify that you have nothing to declare. The following are exempt from duty: items and clothes for personal use, portable computers and adventure tourism gear. For more detailed information, inquire at the Peruvian diplomatic representation in your country.

On the same form, you must declare whether you are bringing in any vegetable or animal species. If so, you will need to have a permit from the competent sanitary authorities in your country. If you do not have the necessary sanitation documents, Peruvian sanitation authorities may order your vegetable species to be incinerated and that the animal be sacrificed.