Answer:
Well it may depend on various things!
Case 1
If it has any connection to humans then without hesitation we should help it. I mean even indirectly it could have been hurt right? We humans are responsible for the degradation of this planet. We have caused so many animals to extinct that i guess its uncountable. If we are the smartest being then i guess it is our duty that no animal should be harmed from us. They have equal right to live here.
I think that helping hurt animals wont do any harm to nature.
But we should never make them dependent totally on us.
if we do so then the eco system can change..
Like if we find a hurt animal we should probably help it but we should let it go because we are not their home. Their home lies somewhere else! someone can be waiting for them.
Case 2
In this case for example you find a deer or any other animal being chased by lions then this case is natural. we shouldnt put our nose in! It is the nature's law that lion should eat deer. So helping it wont do any good because in the other side lion can die of hunger...
But still it depends on you yourself. Do what your heart says!