Who knoweth the spirit of man that goeth upward, and the spirit of the beast that goeth downward to the earth?
This seems like such a simple-to-answer question. Of course they don’t. Only humans have souls, and you have to have a soul to go to Heaven. But have you ever looked into it, or were you just assuming? Let’s take a quick look at a couple other verses.
For that which befalleth the sons of men befalleth beasts; even one thing befalleth them: as the one dieth, so dieth the other; yea, they have all one breath; so that a man hath no preeminence above a beast: for all is vanity.
A righteous man regardeth the life of his beast: but the tender mercies of the wicked are cruel.
But ask now the beasts, and they shall teach thee; and the fowls of the air, and they shall tell thee:
While those don’t actually say the words “Your pets are in Heaven”, it seems clear that there are pets in Heaven. Especially after reading this verse:
And every creature which is in heaven, and on the earth, and under the earth, and such as are in the sea, and all that are in them, heard I saying, Blessing, and honour, and glory, and power, be unto him that sitteth upon the throne, and unto the Lamb for ever and ever.
Every creature which is in Heaven? I don’t know anywhere in the Bible where it refers to humans as creatures. It only says “creatures” when talking about animals. So it would seem that animals are in Heaven, and I don’t see any reason why that shouldn’t include our pets.
You’re probably wondering how, though, since they can’t choose to accept Christ. Well, that only is for humans, as they’re the ones who fell from grace by sinning in the Gardens. A cat didn’t eat from the Tree. So maybe they don’t need to be saved.
Besides, good luck baptising a cat.