the_arv

WP Family Tree is a family tree generator plugin for WordPress. Each family member have their own post within 
a “Family” category. In the family member posts you can specify birth dates, mother, father, etc. A complete family 
tree can be displayed on any page with the [family-tree] shortcode.
The root of the tree can be specified with the root parameter: [family-tree root=’John Doe’]
Specify a ‘featured image’ for the post and the image thumbnail will be used in the family memebers list and in 
the family tree. Please see the screenshots.
For support please visit the 
<a href="http://www.wpfamilytree.com/" title="Wordpress Family Tree Plugin" rel="nofollow ugc">WordPress Family Tree Plugin</a> homepage
Released under the terms of the GNU GPL, version 3.
Copyright (c) 2010-2016 Arvind Shah
Any suggestions for future enhancements welcome.

WP Family Tree

WP Family Tree is a graphical family tree generator plugin for Wordpress. Each family member have their own blog post.

burria

Creates a custom content type to upload pets, displays from 1 to 4 generations (parents are counted as first generation).
When you create a new pet it lets you select the mother and father and then draws a pedigree 
tree when the user is viewing the post.

Laika Pedigree Tree

This plugin creates a custom post type for pets, connected to his parents and then automaticaly draws a pedigree tree.

WP Family Tree vs Laika Pedigree Tree