Kingdom Animalia

• Individuals multicellular with wall-less eukaryotic cells.
• Multi-cellularity accompanied by cellular tissue and organ-system levels of an organization with complex cell junctions
• Nutrition is primarily ingestive with digestion in an internal cavity, but some forms are absorptive and some lack a digestive cavity.
• Reproduction mainly sexual with meiosis forming gametes; haploid stages other than gametes almost lacking above lowest phyla.
• Zygote develops into an embryo.
• Animals are motile or mobile (except sponges).
• Tissues and organ system complexity