[Dimensio]

No, no other 'mammal' thinks or writes

There is no stated limitation on the cognative or physical abilities of animals.

[fortheDeclaration]

No, no other 'mammal' thinks or writes There is no stated limitation on the cognative or physical abilities of animals.

Well, so far, only man is the one doing the talking and writing.

The reason is that man has a soul and the rest of God's creatures do not (with the exception of Angels)

Now, where is your soul going to spend eternity?