Here we begin to look at the correlation between the lifespans of Golden Retriever Parents and their offspring.
The image below plots offspring lifespan versus parent lifespan. The red dots indicate a male parent  and
the blue dots indicate a female parent.
The following plot illustrates a particular realization of a random parent lifespan linked to a
random offspring life span.
In the following a black dot for a given
year represents the average lifespan
for  those males who died in that year.