You know, you have every reason to believe that your pet will be in heaven, or at the very least that there will be dogs, cat and very other animal ever created in heaven.
It is only man that must comply with John 3:3 to get into heaven, animals seem to have a free ride.
Hope this helps.
This is Pastor Jim Marstaller and I just want to expand on the answer as to whether certain animals will be in heaven. Before Adam sinned there were animals on this earth. Therefore, I believe, in the new earth there will be animals. I do not know if there will be animals in the new heaven - as far as I know Scripture is silent on that issue.
I am convinced that there will be no more mourning, sorrow, etc. in heaven. 'If' it takes a certain animal to make you 'happy' in heaven that animal will be there. Please realize that Jesus is enough. He will have our attention, praise, and awe. In heaven there "shall be no more death, nor sorrow, nor crying. There shall be no more pain,..."