Animal cell wall is essentially made of:

Animal cells are fundamentally distinguished from plant, fungal, and bacterial cells by the absence of a cell wall [1]. While plants possess a rigid cell wall primarily composed of cellulose [1], animal cells are enclosed only by a flexible plasma membrane [2]. This membrane is essentially a lipid bilayer, specifically a double layer of phospholipids with embedded proteins and carbohydrates. Scientific evidence from erythrocyte studies confirms that these biological membranes consist of lipid bilayers rather than monolayers. In animal tissues, while cells lack a cell wall, they are associated with an extracellular matrix of proteins and carbohydrates, but the primary structural boundary of the cell itself remains the phospholipid lipid bilayer. Therefore, the 'wall' or outer boundary of an animal cell is defined by its lipid bilayer composition.

Sources

1. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 2: The Invisible Living World: Beyond Our Naked Eye > Activity 2.3: Let us investigate > p. 12
2. [2] https://www.ncbi.nlm.nih.gov/books/NBK9898/