The good news is that there is currently no data indicating that Brazil nuts (Bertholletia excelsa) or almonds (Prunus dulcis) are toxic to animals.
They can, however, cause stomach upset if eaten in large quantities. All nuts contain fats, which can lead to gastrointestinal upset, such as vomiting and diarrhea. Foods with high fat contents can also potentially produce an inflammatory condition of the pancreas known as pancreatitis. In addition, many commercially sold nuts are saltedand if a pet consumed a large volume of salt from the nuts, this could potentially pose a risk for the development of a sodium ion toxicosis.