Tools to combine a video with an animated logo
If I were you, here is my solution. I separate your video with animated with 3 parts: intro video with walking and roaring tiger, fading logo and logo with slogan. As per your mentioned that you may be a green hand for video editing software, therefore Premiere or After Effects may be too complicate for you. You can try some simple video editing software like I answered here.


Step one, find a walking and roaring tiger YouTube video like this
One: 
                
            , then download it
via YouTube downloader, Google it, you will find some free
Downloader (because it's not friendly to YouTube, you may need to
take caution)
Step two,  cut/edit this video with the simple video editing tools
You picked above, only keep the useful scene, i.e. walking and
Roaring part, save it to your pc first.
Step three, Google tiger head cartoon, you will find multiple
suitable tiger head logo, but you may need to touch up before use it
as your logo. If you already have one, perfect, you can just import
to that video editor, drag and drop to the timeline, applying fading
transaction, save it to your pc again.
Step four, at this point you need PIP function (make sure the
software you picked up has this function). Import the two video clip
and drag and drop the first one(made on step two) to video track and
drop the second one to PIP track, adjust the size and position of
your second video, which can be positioned above the tiger head,
fading at the same time, that's the PIP value.
Step five, import logo to that video editor and them drag to
image/media track (this logo should be put at the end of the
previous video), add text with the slogan you need.
Last step, export and save them to your pc, your video with animated
logo completed. All those steps can be achieved by my software (you
can check my profile), which is very simple to use and will be
suitable for green hands like you. Good luck for you!