Freeze-drying is a method of dehydrating frozen materials by a process of sublimation under high vacuum. This drying method is known for its ability to sustain food quality during the low temperature drying due to the minimum loss of flavor and aroma, negligible shrinkage and the absence of water, which minimize the chance of microbial growth. It can also be used to preserve the animals in the museum to attract tourist from different part of the world, which will generate revenue for an individual, State or Federal Government. This may be used to keep these animals in their original form for latter consumption. The benefits of the process include extended shelf life and cheaper storage and transportation costs relative to the liquid form of the product. It is comprised of freezing, sublimation (primary drying), and desorption (secondary drying). Lyophilization stabilizes the drug in formulation by slowing down the degradation process. It modifies the nature of materials by eliminating the solvent component to level that it no longer supports chemical changes to occur. Solvent removal is accomplished by freezing the formulation and immobilizing any solvent in the interstitial region between the crystals.