Yes,
What is the main cause of allergies? A type of cell is called a mast cell, and they read and react to triggers (Triggers vary from person to person and common ones include pollen, pet dander, topical chemicals like using topical steroids on your skin). When you or your pet come in contact with allergens, the mast cells here release histamine. It makes you itchy all over because of swelling (urticaria)
Another way for this to happen is sensitization which means that antibodies develop against some components in specific animals; then these animal proteins can activate any further allergic responses if they get into your body. This sensitivity may be lifelong or become acquired in certain people…