User blog comment:VLKAFENRYKA/Space Wolves vs Tyranids/@comment-6078851-20130218195945

the tyranids outnumber everything. the hive fleets reached our galaxy only about 250 years ago, so they pretty much have just got here. all tyranid encounters have been the equivelant of sticking a fork in a roast to see if it's ready for consumption. once they've stuck the fork right in and find out that we're "done" they will devour everything (including the space wolves).

i really like tyranids though and this is just my opinion :)