That's right, thanatosis is a very common trait in weaver spiders, however, this behavior is more noticeable in some species. In the family Araneidae there are also those of the genus Kaira, the behavior of playing dead is so marked in some species of this genus that you can take it by hand or manipulate them and they will not make any movement, as if it were a dry leaf. Sometimes it is even difficult to see them even though they are in front of our eyes hehehe.