Baby will try to stand/cruise/crawl more, and take everything they can grab to put into the mouth, so baby proofing the house is important, and also watching out for falls:) Teething discomfort may be still be there at this age, so baby may be a bit more fussy
Their weight will not increase much as they are active crawling and climbing around. Mine looks slimmer at this age
Putting things into mouth. Careful when placing if baby starts to roll will fall.