Alex’s pet rat is always with him. She’s trained to signal when she needs to use the bathroom, to fetch certain useful objects like keys, what “no” means, and to come to her name. She was also trained to deliver notes to certain people back home. She’s smarter than average and can pick up new tricks fairly quickly.
She, much unlike Alex, is not afraid of strangers. Given the option she’ll gladly climb all over just about anyone, though if there’s a loud noise she always rushes back to Alex.
Alex keeps food in his pocket usually and a mini rodent water bottle with a normal cap so that the water doesn’t leak. Alice knows to signal to him that she’s thirsty by gently nibbling at his earlobe, and Alex takes out the bottle and either hooks it onto something or holds it for her. The bag is kept open so that she can get food herself.