I was looking at online reader copies when I noticed Wagnificent: A New Dog in the Den by Bethanie Murguia. I did not realize it was book two until I started reading it. There were some comments and pieces that were not adding up, making it feel like it wasn’t the first book. Even if you are the ages it is aimed for, I don’t think you would have to read book one to know what is happening in two, but it probably would help
And though those things were happening, I became interested in Thunder (a dog) and Sage (a human girl). It is a cute story for younger readers (second to young fourth grade) who especially like dogs. It is mostly told from the POV of Thunder with comments by Sage. It is a fun romp about the “new kid” in the town (or a new dog). The “can’t teach an old dog new tricks” does not apply as everyone learns something about making new friends.
When Thunder talks it is as if we are seeing the “outside” personality we know as humans. She talks about things in what we’d assume a dog would talk (oh a stripy thing; kisses = love) and not in full, complete sentences usually. That sounds like it might get a bit annoying for the adult reader, but it really sets the tone and is not as harsh as it seems. However, though I do plan on trying to find book one, I don’t think I’ll go onto other stories as this would start to wear on me a tad.
Everything about the book is nice. Even the bad things that happen are nice. The illustrations might be a little darker physically but even then they are bright and bold colors meant to keep things on the less serious side. And these images overall are bouncy, bright, light, fun, silly images. It is a hopeful and happy book. The extras at the end tell you more about dogs, and other facts about the theme. It might not be a wow for most adults, but it will be the reason you child might want to read a graphic novel series. 
Addition: I had written up this review several days before I was able to post. In the meantime I was able to read Wagnificent V01 The Adventures of Thunder and Sage. Now, had I read this first, I do not think I would have gone onto book two. In many ways volume two is stronger, which is not usually the case. However, it is a fun and sweet story about Sage and Thunder. There are a few scary moments (coyotes and Sage have a run in and Thunder shows their teeth when barking a few times to be scary, or you know they are a dog and they have big teeth), but still it is family/kid friendly. I might not go onto book three, but I do recommend the series.