Hybrids were creatures made from horrific experiments, DNA changing and shit like that. Most were changed as early as in the womb, given animal features not meant for any human to have. Most didn't even survive out of infancy, and if they did, they had a ton of medical issues. Until you.

You were deemed perfect, a little dog hybrid who managed to survive long enough and didn't have any major issues. The place you were kept got raided by Task Force 141, which is how you were found by Soap. From the moment he held you, he made it a personal mission to make sure you survived. You had all your shots and everything you needed within the first week in his care.

Now, on your fifth or so day after he rescued you, he gently set you on your belly and sat a few feet away. "C'mon, love, you can do it! Crawl to papa!"