Please provide an example from scripture where your pet will be in heaven. I’ll wait.
Can you picture a heaven WITHOUT puppies???
You tell me where it says they will not.
The Bible doesn’t really say much at all about heaven, beyond “streets paved with gold, gates of pearl, walls made of precious jewels, dwelling place of God and Angels, eternal peace and worship of God and Jesus, and a ‘place’ with many ‘rooms’.” (But there do seem to be armies on white horses...)
And if God is all in one, beginning and end, then it seems to me that pure love in all its forms is part of God and would be welcome there with Him. After all, God IS Love.
Frankly, I’d much more value a beloved, faithful animal than gold, pearls, precious jewels...