Hey!
Could you send a google play link for the app? 1, 2, 3, 4 Seems easily doable.
About the new land animal, bug fixing and bonus improvement I'd really like to look at the source code maybe, to know what I'm working with, do you have a gitlab/github/bitbucket repository?
As for my skills: I've been developing professional applications with loads of daily active users for almost 3 years now. I won't brag about the projects, if you are interested you're welcome to ask more details
Let's have a chat :)