Find value in multidimentional array

What is the quickest way to get a value in a multidimentional array, based in another value in it’s row e.g.

public static readonly string[,] animals = new string[,]{
{“dog”, “sid”},
{“cat”, “ian”}
{“fish”, “mary”}

I want the second value of the cat row (ie it’s name). I presumen i can use find or get value or something?!