**FIGURE 1.** Boundary conditions, forces applied in the studied jaws, location of points P and Q and separated regions where the Non-homogeneous properties are applied for the *Connochaetes taurinus* and *Alcelaphus buselaphus*.

**FIGURE 2. **von Mises Stress Distribution, von mises strain distribution and Displacement field distribution for *Connochaetes taurinus* and *Alcelaphus buselaphus* when elastic modulus is E=10000 MPa, E=25000 MPa and E=50000 MPa for a homogeneous material (case A).

**FIGURE 3. 3.1** von Mises stresses, **3.2** von Mises strains, **3.3** Displacements,** 3.4** von Mises stress relationship with reference value, **3.5** von Mises strain relationship with reference value and **3.6** Displacement relationship with reference value in front of variation in the elastic modulus (E) in points P and Q.

**FIGURE 4.** von Mises Stress Distribution, von Mises strain distribution and displacement field distribution for *Connochaetes taurinus* and *Alcelaphus buselaphus* when elastic modulus is E=10000 MPa, E=25000 MPa and E=50000 MPa for a non-homogeneous material (case B).

**FIGURE 5. 5.1** von Mises stresses, **5.2** von Mises strains, **5.3** Displacements, **5.4** von Mises stress relationship with reference value, **5.5** von Mises strain relationship with reference value and **5.6** Displacement relationship with reference value in front of variation in the elastic modulus (E) in points P and Q.