The axolotl would probably rip bits off the Betta and kill it. Male Bettas are quiet peacefull fish and they will only fight with another male Betta.
The Black Mamba would win.... 'cuz it's black.
This does not just "happen". You will have had to put a male and female together for them to breed. The male would have built a nest of bubbles and would be tending this nest and eggs if your Bettas had spawned.
There would be a lot of fighting and there would be dead people everywhere.
The answer is yes: cats are very curious by nature and yours would definitely be interested in your axolotl
The weight of an Axolotl would depend upon its size.
They could, but i seriously doubt they ever would.
nothing would happen they would be fine
You would die.
We would have Facebook.
You would die.
They would grind together.
they break