We see that present creation is distorted because of the existence of sin and our lack of perfect communion with God. There exists disease, pain, hunger, and material dangers in this present life. This is present not only in the human race, but in all of creation as well.
How then should we handle the witnessing of certain events, such as the nature we see in certain animals? For example, almost all of us would take joy in a rambunctious kitten playfully biting and clawing at a person’s hand. We probably aren’t going to think to ourselves “How awful!”. Even in the natural world, where there is death and violent competition, we would watch in awe as an eagle swoops down and snatches a fish with its talons. Such events, if anything, bring us closer to God rather than further.
Since this is not something that is defined as evil, but as good, then should we assume that these qualities will be reflected in Heaven in some manner? Though there will no longer be death, will there remain a quality of ‘rambunctiousness’ in the human soul?