Nothing seems particularly unusual here, certainly whole chicken in a can is quite normal, most of the others are just various meat products. Although the idea of canned cheeseburger or strawberry jam sandwiches sounds a rather....ewww!
I think a lot of what you see and don't see in a can, is down to the country you're in. In the UK you don't see canned donkey meat or camel meat AFAIK, but they're available in a can here. Appears to be a USA article, so I think the idea of canned scorpions is unusual for that country, but not unusual for China.