Yellow-headed side-necked turtles will not bite small turtles under normal breeding, because their character is mild compared with other turtles, even though they are highly active at ordinary times, they do not have high attack power, so long as they are not under special circumstances, they will not attack small turtles in general. In addition, although they are omnivorous turtles, they prefer vegetarianism and have little interest in meat. Therefore, even if they are hungry, they will not attack the little turtle. However, they are larger when they are adults, and their body length will be about 60 cm, so it is best for breeders not to keep them with tortoises that are too small.

Yellow-headed side-necked turtles have mild personality and miscellaneous feeding habits, but they are large in size, so there are not many turtle species suitable for mixing with them. Common ones are pig-nosed turtles, round Australian turtles, map turtles, flame turtles, etc. These turtles are of the same size as yellow-headed side-necked turtles, and one side will not bully the other. Moreover, their habits are similar, so they are more suitable for mixed breeding together.

Yellow-headed side-necked turtles are large in size, and the turtles mixed with them are also large in size, so breeders need to prepare a large container for them to ensure that they can move normally. In addition, yellow-headed side-necked turtles prefer plant feed, and breeders need to feed them specially.