Where did they bite the apple?
The burden of proof is on you, pal. Show me scripture that indicates animals do NOT sin as well as scripture that says animals go to heaven.
“Show me scripture wherein animals sinned.
Where did they bite the apple? “
Show me where in Scripture “the apple” is mentioned.
Which requires defining sin and culpability, and the consequence of it. An interesting theological question to be reasoned out. To sin does not require "eating the apple" (though Gn. 3 does not say what kind of fruit it was), as angels sinned before that. But the point is that animals do not have inherited sin (not that i see infants culpable of this), which at length leads to the certitude of actual sin in the morally culpable.
But as being under the curse, the wolf and the lamb do not feed together well, and while "sin is the transgression of the law," (1Jn. 3:4) that applies toward those who are under the law.
Now we know that what things soever the law saith, it saith to them who are under the law: that every mouth may be stopped, and all the world may become guilty before God. (Romans 3:19)
While the Law was given to men, yet dogs are under the law of their master who indirectly enforces aspects of that law and which dogs can break. But they would not be culpable of actual sin unless they could choose otherwise. Yet i think dogs (whom i have found memories of) can seem to express guilt over doing what they know was wrong, and may face punishment by them.
So in principle we may say a dog can do wrong, but not having a God consciousness (worship is an activity peculiar to man), even repressed as with many man, then they were never guilty of disobedience to Him and facing judgment accordingly. Nor are they treated as having eternal spirits, or mentioned in teaching on the resurrection and being rewarded.
Thus while dogs may be culpable to their masters for choosing to do wrong, they face no eternal punishment, and while animals do not now evidence a God consciousness, and are not mentioned as spirits going to Heaven as with man upon death, or being in the bodily resurrection, yet all creation will one day praise the Lord, and with God all things are possible, if not being contrary to His word.
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. (Revelation 5:13)
I had a poodle once that would eat the tomatoes off the vine!