Liver can go bad and you can die because of drinking alchohol absorption
Vikki and also Microvilli on the individual Villus
It is directly behind their hindquarters beyond which they cannot see. For example, in the optic disk, and, therefore, there is no image detection in that area.
To ensure that Juan has good health she can try working out a little, not a lot just enough where she has a good strength and endurance and not eat a lot of junk food.