I have heard incidents where the Prophet has mentioned that animals can hear the cries of the people. Is it true?
Yes.
###Sahih Bukhari:
Sahih Bukhari:
Narrated Anas: The Prophet (ﷺ) said, "When a human being is laid in his grave and his companions return and he even hears their foot steps, two angels come to him and make him sit and ask him: What did you use to say about this man, Muhammad ? He will say: I testify that he is Allah's slave and His Apostle. Then it will be said to him, 'Look at your place in the Hell-Fire. Allah has given you a place in Paradise instead of it.' " The Prophet (ﷺ) added, "The dead person will see both his places. But a non-believer or a hypocrite will say to the angels, 'I do not know, but I used to say what the people used to say! It will be said to him, 'Neither did you know nor did you take the guidance (by reciting the Qur'an).' Then he will be hit with an iron hammer between his two ears, and he will cry and that cry will be heard by whatever approaches him except human beings and jinns." ~ Sahih al-Bukhari 1338Sahih al-Bukhari 1338
Narrated `Aisha: Two old ladies from among the Jewish ladies entered upon me and said' "The dead are punished in their graves," but I thought they were telling a lie and did not believe them in the beginning. When they went away and the Prophet (ﷺ) entered upon me, I said, "O Allah's Messenger (ﷺ)! Two old ladies.." and told him the whole story. He said, "They told the truth; the dead are really punished, to the extent that all the animals hear (the sound resulting from) their punishment." Since then I always saw him seeking refuge with Allah from the punishment of the grave in his prayers. ~ Sahih al-Bukhari 6366