However, he also found it necessary to destroy most of them, along with everything else, in the flood.
The massive size of Naoh's ark was to preserve animal life. Afterall, the animals were relatively innocent and it was His human creation he sought to destroy with the exception of Noah and his family. And He didn't destroy everything. Plants regenerated and marine life was not destroyed.
I know the Bible doesn't tell us animal life will exist in heaven or that it won't, and though it may seem I am leaning toward it will, that's not really the case. If I was to guess, I'd guess not, as the Glory of God will be quite sufficient to captivate our attention, although His Mercy and Grace may allow it.