Help me please These types of diagrams are extremely confusing to me

From the given table, let's make a venn diagram to show the number of animals that are dogs and are over 8 years old.
We have the table:
Species Age
Dog 10
Cat 9
Dog 9
Cat 5
Dog 5
Cat 13
Cat 13
cat 9
Dog 3
Dog 11
Cat 11
Cat 10
Using the table, we can deduce the following:
• Total number of dogs = 5
,• Number of dogs that are over 8 years old = 3
,• Number of dogs under 8 = 2
,• Number of cats = 7
,• Number of cats over 8 years = 6
,• Number of cats under 8 = 1
,• Total number of animals over 8 = 3 + 6 = 9
Now, let's draw the venn diagram: