Wow, there's a lot to contemplate in this question!
Ok... ants. No tundra anywhere in the world because carrying embers around, ants keep the ground from freezing. Their tunnels can be built to allow airflow, and there's a new worker ant job to keep bringing down kindling. A new queen flies to a new site bearing a small cinder, mates, then burns the male's body as kindling for the new home to keep her warm until the first workers hatch.
Elephants: these giants already reshape their environment to provide better resting places, moving trees to provide defensible areas. Now they can build fire breaks on the savannah. Small controlled fires, which they roll on to extinguish (mud on their backs first) create zones where natural fire doesn't spread. More species adapt to "live in the elephant's shadow" (potential book title) to be safe.
Antelope: nightly patrols with fire sticks in their mouth keep the herd defended. Predators have a harder time approaching, and the prey has a new defensive weapon. Hunting hyenas do not carry their own fire -- they scavenge from the prey they bring down, cooking the antelope with its own defense torch, ironically.
Locusts: every 11 or 17 years, the American Midwest burns. The locusts erupt out of the ground and in great clouds descend on prairie and farmland. They devour everything, starving the local birds. To combat this, sparrows and other birds have learned to collect pitch from natural seeps. The males dip sticks in and fly high to drizzle it over the locust swarm. The females build smaller-than-normal "fire nests", which make excellent kindling, light them, and scatter the burning twigs over the locusts. Eventually something catches when the birds come swooping in flocks of hundreds. The locusts burn. Many escape, and the scene plays out again the next day a few miles away.
Cats: a happy cat is a human's friend. An angry cat, well, historically they would crap on your laundry to show displeasure. Now, they might just burn it. Cats and humans live together in a nervous detente since the feline acquisition of fire.
Lizards: look to the heavens and see the burning stars. Now look across the desert and see the heavens reflected in the campfires of every cold-blooded lizard. Millions of them enjoy warmth in the desert nightly chill. During the day, they scavenge fast-growing cactus, plucking the prickly-pear parts and leave it out to dry in the unrelenting sun, providing good coals come nightfall. The cactus regrows as quick as it can. If cactus becomes sparse and weather particularly chill, some lizards have been known to break off and burn their own tails.