Die, der and das are the definite articles used to introduce a specific noun in the nominative position (Comparable to the English The). Die is used for feminine and plural nouns. Das is used for neuter. Der is used for masculine. However Der changes to Den when used in the accucative position while die and das remain unchanged.
The male voice saying "Das Tier" does not clearly pronouce the "T". It is very hard to tell what word is meant. Could the app use only the other (clearer) speaker on the " type what you hear" exercises? Beginners like myself need clearer pronunciation, to help me learn to identify the words.
It might be helpful to consider that a lot of languages, including German apparently, do not aspirate the "t" (and "p" and "k") as much as we do in English. And by aspirate, I mean hit it hard with lots of air coming behind it. So to those of us who are accustomed to hearing such a hard-hit "t", it can sound closer to "d" (or, in the case of "p" and "k", like "b" and "g", respectively). On the flipside, to those who do not speak English as a native language, it can sound like we're practically beat-boxing with our consonants.
I think celticlord88 is referring to the band "Rammstein" (double m) rather than the air base "Ramstein" (single m). The band has a song called Tier... which becomes incredibly disturbing once you start understanding the lyrics. I recommend most people stick with "Du Hast" and leave their Rammstein knowledge at that ;-)
Just in case anyone wanted to know the answer to my question, you can find it here... http://german.about.com/library/weekly/aa042098.htm
I put the animal and it said it was wrong and it actually meant the Beast.