I want a cell from one sheet to return the sum of various cells in another
sheet.
For Example:
Sheet 1:
Description Quantity
Cat 7
Dog 3
Bird 9

Sheet 2:
Description Quantity
Cat 1
Dog 2
Cat 2
Bird 4
Dog 1
Cat 3
Cat 1
Bird 5

I want all the cells from sheet 2 with similar descriptions be added and the
value entered in a single cell on sheet 1.