Hydrogels and organogels are promising options for delivering medicines and nutrients to animals. They are flexible and can be designed to release nutrients at specific parts of the body, improving their bioavailability and avoiding wastage. These gels can be customized to carry different nutrients, with their release rate and location predetermined during the manufacturing process. They are known as “smart release vehicles” for nutrients because they can prevent degradation of nutrients before they are absorbed. Hydrogels and organogels are differentiated by their ability to incorporate polar and nonpolar compounds, respectively. Both types of gels contain monomeric units that are cross-linked with a gelator using physical or chemical methods. The physicochemical properties of the gel can be controlled by the monomeric unit and the manufacturing process. These gels have many applications, including in domestic products, medicated products, drug vehicles, and nutrient delivery systems. This chapter discusses the physicochemical characteristics, various synthesis and characterization methods, and uses of these gels as food delivery systems.