Answer To Extinction is a bedrock addon that make the use of the existance of existing animals in order to bring back extinct Species.

The addon is in development phase so dont mind if you face some bugs

Dire Wolf:

The companion you are looking for is here

• Ridable
• stronger attack
• 20 hp (40 in future)

Dodo:

This dumb was self responsible for their extinction

• Similar to Chicken (might get buff in Future)

Smilodon:

• a robust big cat with a long strong fangs
• tamable (milk bucket)
  
• feed on every type of meet but recommended to use healing potion 
• rideable, sittable
  
  

   

Dorudon:

• ancestor of dolphin's 
• still under progress

Deer:

• Can be spawned after combining DNA of goat and cow
• behaves like sheep

Velociraptor 

• Hostile to player and other type of mobs
• Tamed with rotten flesh
• Feed on every type of raw flesh 

Block : Gene Bench

All the thing you need:

Click on image to join

In future There will be More

All your needs is Glass bottle to unlock all recipies.