New abilities like what?
An animal adapts to colder climates?
More, that it has more adaptability to colder climates.
Or, for example, increased abilithold oxygen in the blood, allowing for better adaptation to higher altitudes.
Yes. To some extent. The extent can change, though.Already programmed in it's DNA.
Yes. We even have the fossils for that transition: multiple species changing from a reptilian body type to a mammalian one.An animal transition from a replied to a mammal?
You might be interested in looking at the species that form the transition. For example, ones that have the jaw double jointed to allow for a transition between the reptilian style ear to the mammalian. We have the actual fossil skulls of this transition. And yes, it was a perfectly well working animal in its own right.Not possible. It's a completely different body system.