Last year, in the Netherlands, one million animals were breeded to be used for animal testing. Out of these one million animals, 450.000 died without any tests being performed on them.

The scientist-to-maybe-be in me says there must be a good reason that happened. There is a strict committee that decides if animal testing is really necessary for a study. They would not allow waste of animals.

The animal-lover in me could cry about this.

The animals were either sick and could not be used for the tests, or did not meet the requirements to be included in the tests; wrong gender for example. The first I can understand. Test animals get sick too, you can't help that. They are living creatures after all. Although I do think some researches forget that sometimes.
The second, I can not understand. At all. I think it is absolutely unbelievable that there could not be find any other destiny for those animals than death. If even is was to be used for a different study, that would spare other animals, and in total less animals would be needed. 

It just makes me so sad, and angry that some people use these animals so nonchalant.