It is not real 4K in any material way due to the animation being rendered in 2K. Studios have upscaled the 2K image to 4K for your 4K UHD TV. You should see some visual improvement over a standard 1080p Blu-ray. Animated CG movies scale up very well and can look like Real 4K. Check the information below to see if the studios have upgraded the video with HDR or added immersive Dolby Atmos or DTS:X audio tracks.
Taking place in a Manhattan apartment building, Max's life as a favorite pet is turned upside down, when his owner brings home a sloppy mongrel named Duke. They have to put their quarrels behind when they find out that an adorable white bunny named Snowball is building an army of lost pets determined to take revenge.