One of the signs of Judgement Day is a creature as described in the following verse (with it comes a great punishment for disbelievers and it is one of the major signs so repentance won’t be accepted after its appearance) 

27:82 An-Naml

‎۞ وَإِذَا وَقَعَ الْقَوْلُ عَلَيْهِمْ أَخْرَجْنَا لَهُمْ دَابَّةً مِنَ الْأَرْضِ تُكَلِّمُهُمْ أَنَّ النَّاسَ كَانُوا بِآيَاتِنَا لَا يُوقِنُونَ

And when the word befalls them, We will bring forth for them a creature from the earth speaking to them, [saying] that the people were, of Our verses, not certain [in faith].